Custom Rectangular pipe adapter STL 3D file 295x291 mm to 130x130 mm – transition: 25 mm 📦#6175

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Rectangular duct transition downloadable as STL 3D file. The internal cross-section on side A is 295x291 mm (rectangular), while side B is 130x130 mm (square). The sleeve insertion length is the same on both sides, 30 mm. Between the two sleeves, the transition section adds 25 mm, giving an overall length of 85 mm. The shell is thick, with a wall thickness of 5 mm. The ends are left without chamfers, with sharp inner and outer edges.
Generation date: 2026-01-07
3D Model Rectangular pipe adapter STL 3D file 295x291 mm to 130x130 mm – transition: 25 mm

3D model download

Free
  • rectangular-to-rectangular-duc_model6175-nb0_dd{id}.stl : 771.4 Ko
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 295 mm (≃11 5/8 in)
#2 side A internal height 291 mm (≃11.46 in)
#3 sleeve length on side A 30 mm (≃1 3/16 in)
#4 side B internal width 130 mm (≃5 1/8 in)
#5 side B internal height 130 mm (≃5 1/8 in)
#6 sleeve length on side B 30 mm (≃1 3/16 in)
#7 thickness 5 mm (≃3/16 in)
#8 transition length 25 mm (≃0.98 in)
#9 Y offset 0 mm (0 in)
#10 Z offset 0 mm (0 in)
#11 end chamfers none
Metadata Value
external width on side A 305 mm (≃12 in)
external height on side A 301 mm (≃11.85 in)
external width on side B 140 mm (≃5 1/2 in)
external height on side B 140 mm (≃5 1/2 in)
total length 85 mm (≃3.35 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 200x200 mm to 56x56 mm – transition: 40 mm (📦 #5821)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL 3D file 200x200 mm to 56x56 mm – transition: 40 mm
3D STL file for rectangular tube adapter. Side A uses an internal cross-section of 200x200 mm (square), whereas side B is 56x56 mm (square). On side A, the sleeve length is 50 mm, and on side B it is 25 mm. The transition section runs for 40 mm and the overall length is 115 mm, sleeves included. Wall thickness is generous (4 mm). 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 200 mm
sleeve length on side A 50 mm
side B internal width 56 mm
side B internal height 56 mm
sleeve length on side B 25 mm
thickness 4 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 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 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 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 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

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 tube adapter STL 3D file 242x138 mm to 124.6x129 mm – transition: 60 mm (📦 #5969)

1 object(s) - format STL
Rectangular tube adapter STL 3D file 242x138 mm to 124.6x129 mm – transition: 60 mm
Rectangular duct sleeve downloadable as STL 3D file. The internal cross-section on side A is 242x138 mm (rectangular), while side B is 124.6x129 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 60 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.
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 60 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular pipe adapter STL 3D file 150x150 mm to 150x150 mm – transition: 20 mm (📦 #7850)

1 object(s) - format STL
Rectangular pipe adapter STL 3D file 150x150 mm to 150x150 mm – transition: 20 mm
Rectangular duct sleeve exported as STL 3D file. Both ends have the same internal cross-section, 150x150 mm, with a square shape. Each sleeve provides an insertion length of 35 mm. The transition section runs for 20 mm and the overall length is 90 mm, sleeves included. Internal chamfers are added at the ends to make assembly and duct insertion easier.
Parameter Value Unit
side A internal width 150 mm
side A internal height 150 mm
sleeve length on side A 35 mm
side B internal width 150 mm
side B internal height 150 mm
sleeve length on side B 35 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 150x150 mm to 55x55 mm – transition: 25 mm (📦 #5825)

1 object(s) - format STL
Rectangular tube adapter STL 3D file 150x150 mm to 55x55 mm – transition: 25 mm
Rectangular duct fitting exported as STL 3D file. The internal cross-section on side A is 150x150 mm (square), while side B is 55x55 mm (square). The insertion length on side A is 50 mm, while on side B it is 25 mm. Between the two sleeves, the transition section adds 25 mm, giving an overall length of 100 mm. The internal edges at the ends are chamfered to help guide the duct during insertion.
Parameter Value Unit
side A internal width 150 mm
side A internal height 150 mm
sleeve length on side A 50 mm
side B internal width 55 mm
side B internal height 55 mm
sleeve length on side B 25 mm
thickness 3 mm
transition length 25 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

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 pipe adapter STL 3D file 150x150 mm to 150x150 mm – transition: 90 mm (📦 #7849)

1 object(s) - format STL
Rectangular pipe adapter STL 3D file 150x150 mm to 150x150 mm – transition: 90 mm
Rectangular pipe adapter downloadable as STL 3D file. Both ends have the same internal cross-section, 150x150 mm, with a square shape. Each sleeve provides an insertion length of 45 mm. The transition section runs for 90 mm and the overall length is 180 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 150 mm
side A internal height 150 mm
sleeve length on side A 45 mm
side B internal width 150 mm
side B internal height 150 mm
sleeve length on side B 45 mm
thickness 2 mm
transition length 90 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

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 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 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 pipe adapter STL 3D file 150x150 mm to 220x150 mm – transition: 20 mm (📦 #7852)

1 object(s) - format STL
Rectangular pipe adapter STL 3D file 150x150 mm to 220x150 mm – transition: 20 mm
3D STL file for rectangular adapter. The internal cross-section on side A is 150x150 mm (square), while side B is 220x150 mm (rectangular). The sleeve on side A provides an insertion length of 9 mm, and the sleeve on side B 60 mm. Between the two sleeves, the transition section adds 20 mm, giving an overall length of 89 mm. Internal chamfers are added at the ends to make assembly and duct insertion easier.
Parameter Value Unit
side A internal width 150 mm
side A internal height 150 mm
sleeve length on side A 9 mm
side B internal width 220 mm
side B internal height 150 mm
sleeve length on side B 60 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 87x202 mm to 90x220 mm – transition: 20 mm (📦 #8885)

1 object(s) - format STL
Rectangular tube adapter STL 3D file 87x202 mm to 90x220 mm – transition: 20 mm
3D STL file for rectangular conduit adapter. Side A uses an internal cross-section of 87x202 mm (rectangular), whereas side B is 90x220 mm (rectangular). The sleeve insertion length is the same on both sides, 20 mm. The transition section runs for 20 mm and the overall length is 60 mm, sleeves included. Internal chamfers at the ends improve assembly and provide a smoother insertion of the mating duct.
Parameter Value Unit
side A internal width 87 mm
side A internal height 202 mm
sleeve length on side A 20 mm
side B internal width 90 mm
side B internal height 220 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 pipe adapter STL file 182.4x92.8 mm to 182.4x32 mm – transition: 100 mm (📦 #4480)

1 object(s) - format STL
Rectangular pipe adapter STL file 182.4x92.8 mm to 182.4x32 mm – transition: 100 mm
Rectangular duct sleeve downloadable as STL 3D file. The internal cross-section on side A is 182.4x92.8 mm (rectangular), while side B is 182.4x32 mm (rectangular). The sleeve on side A provides an insertion length of 60 mm, and the sleeve on side B 30 mm. The transition section between the two sides is 100 mm long, for an overall length of 190 mm (side A sleeve, transition and side B sleeve). The shell is thick, with a wall thickness of 4 mm. No chamfers are applied at the ends; both inner and outer edges remain sharp. Relative to side A, side B is shifted by 30.4 mm along the Z axis.
Parameter Value Unit
side A internal width 182.4 mm
side A internal height 92.8 mm
sleeve length on side A 60 mm
side B internal width 182.4 mm
side B internal height 32 mm
sleeve length on side B 30 mm
thickness 4 mm
transition length 100 mm
Y offset 0 mm
Z offset 30.4 mm
end chamfers none

Rectangle-to-rectangle duct adapter STL file 90x220 mm to 220x90 mm – transition: 140 mm (📦 #7029)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL file 90x220 mm to 220x90 mm – transition: 140 mm
Rectangular duct sleeve downloadable as STL 3D file. Side A offers an internal cross-section of 90x220 mm (rectangular) and side B uses 220x90 mm (rectangular). Each sleeve provides an insertion length of 40 mm. Between the two sleeves, the transition section adds 140 mm, giving an overall length of 220 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 90 mm
side A internal height 220 mm
sleeve length on side A 40 mm
side B internal width 220 mm
side B internal height 90 mm
sleeve length on side B 40 mm
thickness 3 mm
transition length 140 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Rectangle-to-rectangle duct adapter STL 3D file 182.4x92.8 mm to 182.4x32 mm – transition: 100 mm (📦 #4551)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL 3D file 182.4x92.8 mm to 182.4x32 mm – transition: 100 mm
Rectangular duct connector downloadable as STL 3D file. Side A uses an internal cross-section of 182.4x92.8 mm (rectangular), whereas side B is 182.4x32 mm (rectangular). The sleeve on side A provides an insertion length of 60 mm, and the sleeve on side B 50 mm. The transition section runs for 100 mm and the overall length is 210 mm, sleeves included. Wall thickness is generous (4 mm). Inner and outer edges at both ends are left unchamfered. Side B is offset by 30.4 mm along the Z axis relative to side A.
Parameter Value Unit
side A internal width 182.4 mm
side A internal height 92.8 mm
sleeve length on side A 60 mm
side B internal width 182.4 mm
side B internal height 32 mm
sleeve length on side B 50 mm
thickness 4 mm
transition length 100 mm
Y offset 0 mm
Z offset 30.4 mm
end chamfers none

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 220x73 mm to 220x73 mm – transition: 120 mm (📦 #4273)

1 object(s) - format STL
Rectangular tube adapter STL 3D file 220x73 mm to 220x73 mm – transition: 120 mm
Rectangular adapter provided as 3D STL file. Side A and side B share the same internal cross-section, 220x73 mm, with a rectangular profile. Each sleeve provides an insertion length of 50 mm. The transition section between the two sides is 120 mm long, for an overall length of 220 mm (side A sleeve, transition and side B sleeve). No chamfers are applied at the ends; both inner and outer edges remain sharp.
Parameter Value Unit
side A internal width 220 mm
side A internal height 73 mm
sleeve length on side A 50 mm
side B internal width 220 mm
side B internal height 73 mm
sleeve length on side B 50 mm
thickness 3 mm
transition length 120 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none

Rectangular duct adapter STL 3D file 90x220 mm to 220x90 mm – transition: 25 mm (📦 #4692)

1 object(s) - format STL
Rectangular duct adapter STL 3D file 90x220 mm to 220x90 mm – transition: 25 mm
Rectangular duct sleeve provided as 3D STL file. Side A offers an internal cross-section of 90x220 mm (rectangular) and side B uses 220x90 mm (rectangular). Each sleeve provides an insertion length of 10 mm. The transition section runs for 25 mm and the overall length is 45 mm, sleeves included. 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 90 mm
side A internal height 220 mm
sleeve length on side A 10 mm
side B internal width 220 mm
side B internal height 90 mm
sleeve length on side B 10 mm
thickness 2 mm
transition length 25 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside