Custom Rectangular duct adapter STL 3D file 228x98 mm to 158x63 mm – transition: 20 mm 📦#9464

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Rectangular pipe adapter exported as STL 3D file. Side A uses an internal cross-section of 228x98 mm (rectangular), whereas side B is 158x63 mm (rectangular). The sleeve on side A provides an insertion length of 20 mm, and the sleeve on side B 30 mm. The transition section between the two sides is 20 mm long, for an overall length of 70 mm (side A sleeve, transition and side B sleeve). Internal chamfers are added at the ends to make assembly and duct insertion easier.
Generation date: 2026-06-15
3D Model Rectangular duct adapter STL 3D file 228x98 mm to 158x63 mm – transition: 20 mm

3D model download

Free
  • rectangular-to-rectangular-duc_model9464-nb0_dd{id}.stl : 1.5 Mo
STL Mesh quality : Linear deflection 0.0005 Angular deflection 0.05
No compliance warranty No compliance warranty
(Internal and private use, non-commercial – no distribution – no derivatives)
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Values for this model

This model was generated by the Rectangular-to-rectangular duct adapter template, with the following values:
Parameter Value
#1 side A internal width 228 mm (≃8.98 in)
#2 side A internal height 98 mm (≃3.86 in)
#3 sleeve length on side A 20 mm (≃0.79 in)
#4 side B internal width 158 mm (≃6.22 in)
#5 side B internal height 63 mm (≃2.48 in)
#6 sleeve length on side B 30 mm (≃1 3/16 in)
#7 thickness 3 mm (≃1/8 in)
#8 transition length 20 mm (≃0.79 in)
#9 Y offset 0 mm (0 in)
#10 Z offset 0 mm (0 in)
#11 end chamfers inside
Metadata Value
external width on side A 234 mm (≃9.21 in)
external height on side A 104 mm (≃4.09 in)
external width on side B 164 mm (≃6.46 in)
external height on side B 69 mm (≃2.72 in)
total length 70 mm (≃2 3/4 in)
illustration of the parameters
Parameter overview

Labels are used in the naming of the downloaded 3D files.

Parameter Label
#1 side A internal width widRA
#2 side A internal height heiRA
#3 sleeve length on side A lenSA
#4 side B internal width widRB
#5 side B internal height heiRB
#6 sleeve length on side B lenSB
#7 thickness thi
#8 transition length tra
#9 Y offset ofsY
#10 Z offset ofsZ
#11 end chamfers cha

Related 3D models

To search for a model based on your own parameters, go to the template page Rectangular-to-rectangular duct adapter 

Rectangle-to-rectangle duct adapter STL 3D file 220x90 mm to 180x95 mm – transition: 30 mm (📦 #3980)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL 3D file 220x90 mm to 180x95 mm – transition: 30 mm
3D STL file for rectangular adapter. Side A uses an internal cross-section of 220x90 mm (rectangular), whereas side B is 180x95 mm (rectangular). Both side A and side B sleeves share the same insertion length of 40 mm. The transition section between the two sides is 30 mm long, for an overall length of 110 mm (side A sleeve, transition and side B sleeve). Internal chamfers are added at the ends to make assembly and duct insertion easier.
Parameter Value Unit
side A internal width 220 mm
side A internal height 90 mm
sleeve length on side A 40 mm
side B internal width 180 mm
side B internal height 95 mm
sleeve length on side B 40 mm
thickness 3 mm
transition length 30 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular tube adapter STL 3D file 220x90 mm to 205x60 mm – transition: 50 mm (📦 #9685)

1 object(s) - format STL
Rectangular tube adapter STL 3D file 220x90 mm to 205x60 mm – transition: 50 mm
Rectangular duct transition exported as STL 3D file. The internal cross-section on side A is 220x90 mm (rectangular), while side B is 205x60 mm (rectangular). Each sleeve provides an insertion length of 40 mm. The transition section between the two sides is 50 mm long, for an overall length of 130 mm (side A sleeve, transition and side B sleeve). The internal edges at the ends are chamfered to help guide the duct during insertion.
Parameter Value Unit
side A internal width 220 mm
side A internal height 90 mm
sleeve length on side A 40 mm
side B internal width 205 mm
side B internal height 60 mm
sleeve length on side B 40 mm
thickness 3 mm
transition length 50 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangle-to-rectangle duct adapter STL file 220x90 mm to 205x60 mm – transition: 50 mm (📦 #9709)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL file 220x90 mm to 205x60 mm – transition: 50 mm
Rectangular duct connector provided as 3D STL file. Side A uses an internal cross-section of 220x90 mm (rectangular), whereas side B is 205x60 mm (rectangular). Both side A and side B sleeves share the same insertion length of 40 mm. Between the two sleeves, the transition section adds 50 mm, giving an overall length of 130 mm. Internal chamfers at the ends improve assembly and provide a smoother insertion of the mating duct. Side B is offset by 15 mm along the Z axis relative to side A.
Parameter Value Unit
side A internal width 220 mm
side A internal height 90 mm
sleeve length on side A 40 mm
side B internal width 205 mm
side B internal height 60 mm
sleeve length on side B 40 mm
thickness 3 mm
transition length 50 mm
Y offset 0 mm
Z offset 15 mm
end chamfers inside

Rectangular tube adapter STL file 200x20 mm to 100x50 mm – transition: 50 mm (📦 #4704)

1 object(s) - format STL
Rectangular tube adapter STL file 200x20 mm to 100x50 mm – transition: 50 mm
Rectangular adapter provided as 3D STL file. Side A offers an internal cross-section of 200x20 mm (rectangular) and side B uses 100x50 mm (rectangular). The sleeve insertion length is the same on both sides, 20 mm. The transition section runs for 50 mm and the overall length is 90 mm, sleeves included. The internal edges at the ends are chamfered to help guide the duct during insertion.
Parameter Value Unit
side A internal width 200 mm
side A internal height 20 mm
sleeve length on side A 20 mm
side B internal width 100 mm
side B internal height 50 mm
sleeve length on side B 20 mm
thickness 3 mm
transition length 50 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangle-to-rectangle duct adapter STL 3D file 200x150 mm to 180x100.4 mm – transition: 20 mm (📦 #9333)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL 3D file 200x150 mm to 180x100.4 mm – transition: 20 mm
Rectangular duct fitting downloadable as STL 3D file. Side A uses an internal cross-section of 200x150 mm (rectangular), whereas side B is 180x100.4 mm (rectangular). The sleeve on side A provides an insertion length of 5 mm, and the sleeve on side B 20 mm. Between the two sleeves, the transition section adds 20 mm, giving an overall length of 45 mm. Internal chamfers are added at the ends to make assembly and duct insertion easier.
Parameter Value Unit
side A internal width 200 mm
side A internal height 150 mm
sleeve length on side A 5 mm
side B internal width 180 mm
side B internal height 100.4 mm
sleeve length on side B 20 mm
thickness 2 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular tube adapter STL file 225x95 mm to 150x75 mm – transition: 50 mm (📦 #4766)

1 object(s) - format STL
Rectangular tube adapter STL file 225x95 mm to 150x75 mm – transition: 50 mm
Rectangular vent adapter provided as 3D STL file. The internal cross-section on side A is 225x95 mm (rectangular), while side B is 150x75 mm (rectangular). Each sleeve provides an insertion length of 10 mm. Between the two sleeves, the transition section adds 50 mm, giving an overall length of 70 mm. The outer edges at the ends are chamfered, which simplifies inserting the adapter into the mating duct.
Parameter Value Unit
side A internal width 225 mm
side A internal height 95 mm
sleeve length on side A 10 mm
side B internal width 150 mm
side B internal height 75 mm
sleeve length on side B 10 mm
thickness 3 mm
transition length 50 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Rectangular tube adapter STL 3D file 225x59.5 mm to 114.5x95 mm – transition: 20 mm (📦 #9466)

1 object(s) - format STL
Rectangular tube adapter STL 3D file 225x59.5 mm to 114.5x95 mm – transition: 20 mm
Rectangular adapter exported as STL 3D file. Side A offers an internal cross-section of 225x59.5 mm (rectangular) and side B uses 114.5x95 mm (rectangular). The sleeve insertion length is the same on both sides, 10 mm. Between the two sleeves, the transition section adds 20 mm, giving an overall length of 40 mm. Internal chamfers at the ends improve assembly and provide a smoother insertion of the mating duct.
Parameter Value Unit
side A internal width 225 mm
side A internal height 59.5 mm
sleeve length on side A 10 mm
side B internal width 114.5 mm
side B internal height 95 mm
sleeve length on side B 10 mm
thickness 2 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular tube adapter STL 3D file 122.3x60.3 mm to 116.3x56.3 mm – transition: 20 mm (📦 #7193)

1 object(s) - format STL
Rectangular tube adapter STL 3D file 122.3x60.3 mm to 116.3x56.3 mm – transition: 20 mm
Rectangular duct fitting provided as 3D STL file. The internal cross-section on side A is 122.3x60.3 mm (rectangular), while side B is 116.3x56.3 mm (rectangular). The insertion length on side A is 25 mm, while on side B it is 30 mm. The transition section runs for 20 mm and the overall length is 75 mm, sleeves included. The internal edges at the ends are chamfered to help guide the duct during insertion.
Parameter Value Unit
side A internal width 122.3 mm
side A internal height 60.3 mm
sleeve length on side A 25 mm
side B internal width 116.3 mm
side B internal height 56.3 mm
sleeve length on side B 30 mm
thickness 2 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular pipe adapter STL file 122.3x60.3 mm to 116x56 mm – transition: 20 mm (📦 #7196)

1 object(s) - format STL
Rectangular pipe adapter STL file 122.3x60.3 mm to 116x56 mm – transition: 20 mm
3D STL file for rectangular duct connector. Side A uses an internal cross-section of 122.3x60.3 mm (rectangular), whereas side B is 116x56 mm (rectangular). The sleeve on side A provides an insertion length of 25 mm, and the sleeve on side B 30 mm. Between the two sleeves, the transition section adds 20 mm, giving an overall length of 75 mm. Internal chamfers are added at the ends to make assembly and duct insertion easier.
Parameter Value Unit
side A internal width 122.3 mm
side A internal height 60.3 mm
sleeve length on side A 25 mm
side B internal width 116 mm
side B internal height 56 mm
sleeve length on side B 30 mm
thickness 2 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular tube adapter STL 3D file 220x83 mm to 150x75 mm – transition: 70 mm (📦 #4772)

1 object(s) - format STL
Rectangular tube adapter STL 3D file 220x83 mm to 150x75 mm – transition: 70 mm
3D STL file for rectangular duct transition. Side A offers an internal cross-section of 220x83 mm (rectangular) and side B uses 150x75 mm (rectangular). On side A, the sleeve length is 30 mm, and on side B it is 20 mm. The transition section runs for 70 mm and the overall length is 120 mm, sleeves included. External chamfers at the ends help the adapter slide and seat more easily in the duct system.
Parameter Value Unit
side A internal width 220 mm
side A internal height 83 mm
sleeve length on side A 30 mm
side B internal width 150 mm
side B internal height 75 mm
sleeve length on side B 20 mm
thickness 2 mm
transition length 70 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Rectangular pipe adapter STL file 120x120 mm to 80x80 mm – transition: 20 mm (📦 #4172)

1 object(s) - format STL
Rectangular pipe adapter STL file 120x120 mm to 80x80 mm – transition: 20 mm
Rectangular duct adapter exported as STL 3D file. Side A offers an internal cross-section of 120x120 mm (square) and side B uses 80x80 mm (square). The sleeve insertion length is the same on both sides, 30 mm. Between the two sleeves, the transition section adds 20 mm, giving an overall length of 80 mm. The internal edges at the ends are chamfered to help guide the duct during insertion.
Parameter Value Unit
side A internal width 120 mm
side A internal height 120 mm
sleeve length on side A 30 mm
side B internal width 80 mm
side B internal height 80 mm
sleeve length on side B 30 mm
thickness 3 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular duct adapter STL 3D file 200x20 mm to 100x50 mm – transition: 50 mm (📦 #4700)

1 object(s) - format STL
Rectangular duct adapter STL 3D file 200x20 mm to 100x50 mm – transition: 50 mm
Rectangular duct adapter provided as 3D STL file. The internal cross-section on side A is 200x20 mm (rectangular), while side B is 100x50 mm (rectangular). Each sleeve provides an insertion length of 20 mm. Between the two sleeves, the transition section adds 50 mm, giving an overall length of 90 mm. Internal chamfers at the ends improve assembly and provide a smoother insertion of the mating duct. An offset of 25 mm along the Z axis is applied to side B with respect to side A.
Parameter Value Unit
side A internal width 200 mm
side A internal height 20 mm
sleeve length on side A 20 mm
side B internal width 100 mm
side B internal height 50 mm
sleeve length on side B 20 mm
thickness 3 mm
transition length 50 mm
Y offset 0 mm
Z offset 25 mm
end chamfers inside

Rectangular pipe adapter STL 3D file 110x110 mm to 80x80 mm – transition: 20 mm (📦 #3644)

1 object(s) - format STL
Rectangular pipe adapter STL 3D file 110x110 mm to 80x80 mm – transition: 20 mm
Rectangular tube adapter downloadable as STL 3D file. Side A uses an internal cross-section of 110x110 mm (square), whereas side B is 80x80 mm (square). Both side A and side B sleeves share the same insertion length of 30 mm. The transition section runs for 20 mm and the overall length is 80 mm, sleeves included. The internal edges at the ends are chamfered to help guide the duct during insertion.
Parameter Value Unit
side A internal width 110 mm
side A internal height 110 mm
sleeve length on side A 30 mm
side B internal width 80 mm
side B internal height 80 mm
sleeve length on side B 30 mm
thickness 3 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular duct adapter STL 3D file 243x33 mm to 229x28 mm – transition: 20 mm (📦 #9373)

1 object(s) - format STL
Rectangular duct adapter STL 3D file 243x33 mm to 229x28 mm – transition: 20 mm
Rectangular duct sleeve downloadable as STL 3D file. Side A uses an internal cross-section of 243x33 mm (rectangular), whereas side B is 229x28 mm (rectangular). The sleeve insertion length is the same on both sides, 25 mm. The transition section between the two sides is 20 mm long, for an overall length of 70 mm (side A sleeve, transition and side B sleeve). The outer edges at the ends are chamfered, which simplifies inserting the adapter into the mating duct.
Parameter Value Unit
side A internal width 243 mm
side A internal height 33 mm
sleeve length on side A 25 mm
side B internal width 229 mm
side B internal height 28 mm
sleeve length on side B 25 mm
thickness 3 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Rectangular tube adapter STL 3D file 243x33 mm to 234x30 mm – transition: 20 mm (📦 #9371)

1 object(s) - format STL
Rectangular tube adapter STL 3D file 243x33 mm to 234x30 mm – transition: 20 mm
3D STL file for rectangular adapter. Side A offers an internal cross-section of 243x33 mm (rectangular) and side B uses 234x30 mm (rectangular). On side A, the sleeve length is 25 mm, and on side B it is 26.5 mm. The transition section runs for 20 mm and the overall length is 71.5 mm, sleeves included. External chamfers at the ends help the adapter slide and seat more easily in the duct system.
Parameter Value Unit
side A internal width 243 mm
side A internal height 33 mm
sleeve length on side A 25 mm
side B internal width 234 mm
side B internal height 30 mm
sleeve length on side B 26.5 mm
thickness 3 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Rectangular pipe adapter STL 3D file 171x108 mm to 100x108 mm – transition: 70 mm (📦 #4757)

1 object(s) - format STL (5.0/5) 1 vote(s)
Rectangular pipe adapter STL 3D file 171x108 mm to 100x108 mm – transition: 70 mm
Rectangular adapter provided as 3D STL file. Side A uses an internal cross-section of 171x108 mm (rectangular), whereas side B is 100x108 mm (rectangular). Both side A and side B sleeves share the same insertion length of 5 mm. The transition section runs for 70 mm and the overall length is 80 mm, sleeves included. The internal edges at the ends are chamfered to help guide the duct during insertion.
Parameter Value Unit
side A internal width 171 mm
side A internal height 108 mm
sleeve length on side A 5 mm
side B internal width 100 mm
side B internal height 108 mm
sleeve length on side B 5 mm
thickness 3 mm
transition length 70 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular tube adapter STL file 243x33 mm to 234x30 mm – transition: 20 mm (📦 #9372)

1 object(s) - format STL
Rectangular tube adapter STL file 243x33 mm to 234x30 mm – transition: 20 mm
Rectangular duct fitting exported as STL 3D file. The internal cross-section on side A is 243x33 mm (rectangular), while side B is 234x30 mm (rectangular). The sleeve insertion length is the same on both sides, 25 mm. Between the two sleeves, the transition section adds 20 mm, giving an overall length of 70 mm. External chamfers are added at the ends to make it easier to push the adapter into ducts or pipes.
Parameter Value Unit
side A internal width 243 mm
side A internal height 33 mm
sleeve length on side A 25 mm
side B internal width 234 mm
side B internal height 30 mm
sleeve length on side B 25 mm
thickness 3 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Rectangular tube adapter STL 3D file 225x59.5 mm to 114.5x95 mm – transition: 20 mm (📦 #9467)

1 object(s) - format STL
Rectangular tube adapter STL 3D file 225x59.5 mm to 114.5x95 mm – transition: 20 mm
3D STL file for rectangular duct fitting. The internal cross-section on side A is 225x59.5 mm (rectangular), while side B is 114.5x95 mm (rectangular). Each sleeve provides an insertion length of 20 mm. The transition section between the two sides is 20 mm long, for an overall length of 60 mm (side A sleeve, transition and side B sleeve). The wall is thin, with a thickness of 1 mm. The internal edges at the ends are chamfered to help guide the duct during insertion.
Parameter Value Unit
side A internal width 225 mm
side A internal height 59.5 mm
sleeve length on side A 20 mm
side B internal width 114.5 mm
side B internal height 95 mm
sleeve length on side B 20 mm
thickness 1 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular pipe adapter STL 3D file 225x90 mm to 150x75 mm – transition: 100 mm (📦 #4769)

1 object(s) - format STL
Rectangular pipe adapter STL 3D file 225x90 mm to 150x75 mm – transition: 100 mm
Rectangular duct connector downloadable as STL 3D file. The internal cross-section on side A is 225x90 mm (rectangular), while side B is 150x75 mm (rectangular). On side A, the sleeve length is 35 mm, and on side B it is 20 mm. Between the two sleeves, the transition section adds 100 mm, giving an overall length of 155 mm. External chamfers at the ends help the adapter slide and seat more easily in the duct system.
Parameter Value Unit
side A internal width 225 mm
side A internal height 90 mm
sleeve length on side A 35 mm
side B internal width 150 mm
side B internal height 75 mm
sleeve length on side B 20 mm
thickness 2 mm
transition length 100 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Rectangular tube adapter STL 3D file 242x138 mm to 123.6x124.6 mm – transition: 40 mm (📦 #5902)

1 object(s) - format STL
Rectangular tube adapter STL 3D file 242x138 mm to 123.6x124.6 mm – transition: 40 mm
3D STL file for rectangular duct adapter. Side A offers an internal cross-section of 242x138 mm (rectangular) and side B uses 123.6x124.6 mm (rectangular). Both side A and side B sleeves share the same insertion length of 5 mm. The transition section between the two sides is 40 mm long, for an overall length of 50 mm (side A sleeve, transition and side B sleeve). Internal chamfers at the ends improve assembly and provide a smoother insertion of the mating duct.
Parameter Value Unit
side A internal width 242 mm
side A internal height 138 mm
sleeve length on side A 5 mm
side B internal width 123.6 mm
side B internal height 124.6 mm
sleeve length on side B 5 mm
thickness 2 mm
transition length 40 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular pipe adapter STL file 246x142 mm to 123.6x124.6 mm – transition: 20 mm (📦 #5901)

1 object(s) - format STL
Rectangular pipe adapter STL file 246x142 mm to 123.6x124.6 mm – transition: 20 mm
Rectangular duct fitting exported as STL 3D file. The internal cross-section on side A is 246x142 mm (rectangular), while side B is 123.6x124.6 mm (rectangular). Both side A and side B sleeves share the same insertion length of 5 mm. Between the two sleeves, the transition section adds 20 mm, giving an overall length of 30 mm. Internal chamfers at the ends improve assembly and provide a smoother insertion of the mating duct.
Parameter Value Unit
side A internal width 246 mm
side A internal height 142 mm
sleeve length on side A 5 mm
side B internal width 123.6 mm
side B internal height 124.6 mm
sleeve length on side B 5 mm
thickness 2 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular duct adapter STL 3D file 196x146 mm to 180x104 mm – transition: 20 mm (📦 #9335)

1 object(s) - format STL
Rectangular duct adapter STL 3D file 196x146 mm to 180x104 mm – transition: 20 mm
Rectangular duct fitting exported as STL 3D file. The internal cross-section on side A is 196x146 mm (rectangular), while side B is 180x104 mm (rectangular). The insertion length on side A is 5 mm, while on side B it is 15 mm. The transition section runs for 20 mm and the overall length is 40 mm, sleeves included. No chamfers are applied at the ends; both inner and outer edges remain sharp.
Parameter Value Unit
side A internal width 196 mm
side A internal height 146 mm
sleeve length on side A 5 mm
side B internal width 180 mm
side B internal height 104 mm
sleeve length on side B 15 mm
thickness 2 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none

Rectangular pipe adapter STL 3D file 242x138 mm to 123.6x127 mm – transition: 40 mm (📦 #5903)

1 object(s) - format STL
Rectangular pipe adapter STL 3D file 242x138 mm to 123.6x127 mm – transition: 40 mm
Rectangular duct sleeve downloadable as STL 3D file. The internal cross-section on side A is 242x138 mm (rectangular), while side B is 123.6x127 mm (rectangular). The sleeve insertion length is the same on both sides, 5 mm. The transition section between the two sides is 40 mm long, for an overall length of 50 mm (side A sleeve, transition and side B sleeve). The internal edges at the ends are chamfered to help guide the duct during insertion.
Parameter Value Unit
side A internal width 242 mm
side A internal height 138 mm
sleeve length on side A 5 mm
side B internal width 123.6 mm
side B internal height 127 mm
sleeve length on side B 5 mm
thickness 2 mm
transition length 40 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangle-to-rectangle duct adapter STL file 220x33 mm to 220x26.5 mm – transition: 20 mm (📦 #9379)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL file 220x33 mm to 220x26.5 mm – transition: 20 mm
Rectangular duct adapter downloadable as STL 3D file. Side A offers an internal cross-section of 220x33 mm (rectangular) and side B uses 220x26.5 mm (rectangular). The insertion length on side A is 25 mm, while on side B it is 24 mm. Between the two sleeves, the transition section adds 20 mm, giving an overall length of 69 mm. External chamfers at the ends help the adapter slide and seat more easily in the duct system.
Parameter Value Unit
side A internal width 220 mm
side A internal height 33 mm
sleeve length on side A 25 mm
side B internal width 220 mm
side B internal height 26.5 mm
sleeve length on side B 24 mm
thickness 2 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Rectangular tube adapter STL file 242x138 mm to 123.6x128 mm – transition: 40 mm (📦 #5904)

1 object(s) - format STL
Rectangular tube adapter STL file 242x138 mm to 123.6x128 mm – transition: 40 mm
Rectangular adapter exported as STL 3D file. The internal cross-section on side A is 242x138 mm (rectangular), while side B is 123.6x128 mm (rectangular). Both side A and side B sleeves share the same insertion length of 5 mm. The transition section between the two sides is 40 mm long, for an overall length of 50 mm (side A sleeve, transition and side B sleeve). Internal chamfers are added at the ends to make assembly and duct insertion easier.
Parameter Value Unit
side A internal width 242 mm
side A internal height 138 mm
sleeve length on side A 5 mm
side B internal width 123.6 mm
side B internal height 128 mm
sleeve length on side B 5 mm
thickness 2 mm
transition length 40 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular pipe adapter STL file 300x21 mm to 100x42 mm – transition: 20 mm (📦 #9130)

1 object(s) - format STL
Rectangular pipe adapter STL file 300x21 mm to 100x42 mm – transition: 20 mm
Rectangular vent adapter provided as 3D STL file. The internal cross-section on side A is 300x21 mm (rectangular), while side B is 100x42 mm (rectangular). Both side A and side B sleeves share the same insertion length of 10 mm. The transition section between the two sides is 20 mm long, for an overall length of 40 mm (side A sleeve, transition and side B sleeve). Internal chamfers are added at the ends to make assembly and duct insertion easier.
Parameter Value Unit
side A internal width 300 mm
side A internal height 21 mm
sleeve length on side A 10 mm
side B internal width 100 mm
side B internal height 42 mm
sleeve length on side B 10 mm
thickness 2 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular tube adapter STL 3D file 242x138 mm to 124.6x129 mm – transition: 40 mm (📦 #5968)

1 object(s) - format STL
Rectangular tube adapter STL 3D file 242x138 mm to 124.6x129 mm – transition: 40 mm
Rectangular duct sleeve provided as 3D STL file. The internal cross-section on side A is 242x138 mm (rectangular), while side B is 124.6x129 mm (rectangular). Each sleeve provides an insertion length of 5 mm. The transition section runs for 40 mm and the overall length is 50 mm, sleeves included. Internal chamfers are added at the ends to make assembly and duct insertion easier.
Parameter Value Unit
side A internal width 242 mm
side A internal height 138 mm
sleeve length on side A 5 mm
side B internal width 124.6 mm
side B internal height 129 mm
sleeve length on side B 5 mm
thickness 2 mm
transition length 40 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular duct adapter STL 3D file 200x90 mm to 80x80 mm – transition: 60 mm (📦 #3870)

1 object(s) - format STL (5.0/5) 1 vote(s)
Rectangular duct adapter STL 3D file 200x90 mm to 80x80 mm – transition: 60 mm
Rectangular duct sleeve downloadable as STL 3D file. The internal cross-section on side A is 200x90 mm (rectangular), while side B is 80x80 mm (square). The insertion length on side A is 40 mm, while on side B it is 30 mm. Between the two sleeves, the transition section adds 60 mm, giving an overall length of 130 mm. Wall thickness is generous (4 mm). The ends are left without chamfers, with sharp inner and outer edges.
Parameter Value Unit
side A internal width 200 mm
side A internal height 90 mm
sleeve length on side A 40 mm
side B internal width 80 mm
side B internal height 80 mm
sleeve length on side B 30 mm
thickness 4 mm
transition length 60 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none

Rectangular pipe adapter STL 3D file 243x33 mm to 226.5x25 mm – transition: 20 mm (📦 #9378)

1 object(s) - format STL
Rectangular pipe adapter STL 3D file 243x33 mm to 226.5x25 mm – transition: 20 mm
Rectangular tube adapter downloadable as STL 3D file. Side A uses an internal cross-section of 243x33 mm (rectangular), whereas side B is 226.5x25 mm (rectangular). The insertion length on side A is 25 mm, while on side B it is 24 mm. Between the two sleeves, the transition section adds 20 mm, giving an overall length of 69 mm. External chamfers at the ends help the adapter slide and seat more easily in the duct system.
Parameter Value Unit
side A internal width 243 mm
side A internal height 33 mm
sleeve length on side A 25 mm
side B internal width 226.5 mm
side B internal height 25 mm
sleeve length on side B 24 mm
thickness 2 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside