Custom Rectangular duct adapter STL file 120x40 mm to 120x40 mm – transition: 80 mm 📦#3965

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Rectangular adapter downloadable as STL 3D file. Side A and side B share the same internal cross-section, 120x40 mm, with a rectangular profile. Each sleeve provides an insertion length of 20 mm. The transition section between the two sides is 80 mm long, for an overall length of 120 mm (side A sleeve, transition and side B sleeve). The internal edges at the ends are chamfered to help guide the duct during insertion. An offset of 40 mm along the Y axis and 30 mm along the Z axis is applied to side B with respect to side A.
Generation date: 2025-11-28
3D Model Rectangular duct adapter STL file 120x40 mm to 120x40 mm – transition: 80 mm

3D model download

Free
  • rectangular-to-rectangular-duc_model3965-nb0_dd{id}.stl : 50.9 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 120 mm (≃4.72 in)
#2 side A internal height 40 mm (≃1 9/16 in)
#3 sleeve length on side A 20 mm (≃0.79 in)
#4 side B internal width 120 mm (≃4.72 in)
#5 side B internal height 40 mm (≃1 9/16 in)
#6 sleeve length on side B 20 mm (≃0.79 in)
#7 thickness 3 mm (≃1/8 in)
#8 transition length 80 mm (≃3.15 in)
#9 Y offset 40 mm (≃1 9/16 in)
#10 Z offset 30 mm (≃1 3/16 in)
#11 end chamfers inside
Metadata Value
external width on side A 126 mm (≃4.96 in)
external height on side A 46 mm (≃1 13/16 in)
external width on side B 126 mm (≃4.96 in)
external height on side B 46 mm (≃1 13/16 in)
total length 120 mm (≃4.72 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 

Rectangular tube adapter STL file 100x40 mm to 80x80 mm – transition: 80 mm (📦 #3771)

1 object(s) - format STL
Rectangular tube adapter STL file 100x40 mm to 80x80 mm – transition: 80 mm
Rectangular duct fitting exported as STL 3D file. Side A offers an internal cross-section of 100x40 mm (rectangular) and side B uses 80x80 mm (square). The sleeve insertion length is the same on both sides, 30 mm. The transition section runs for 80 mm and the overall length is 140 mm, sleeves included. Inner and outer edges at both ends are left unchamfered. Side B is offset by 30 mm along the Y axis and 30 mm along the Z axis relative to side A.
Parameter Value Unit
side A internal width 100 mm
side A internal height 40 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 80 mm
Y offset 30 mm
Z offset 30 mm
end chamfers none

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

Rectangle-to-rectangle duct adapter STL 3D file 122x61 mm to 114x54 mm – transition: 140 mm (📦 #7221)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL 3D file 122x61 mm to 114x54 mm – transition: 140 mm
Rectangular duct fitting provided as 3D STL file. The internal cross-section on side A is 122x61 mm (rectangular), while side B is 114x54 mm (rectangular). Both side A and side B sleeves share the same insertion length of 30 mm. The transition section runs for 140 mm and the overall length is 200 mm, sleeves included. Inner and outer edges at both ends are left unchamfered. Side B is offset by 70 mm along the Y axis and 35 mm along the Z axis relative to side A.
Parameter Value Unit
side A internal width 122 mm
side A internal height 61 mm
sleeve length on side A 30 mm
side B internal width 114 mm
side B internal height 54 mm
sleeve length on side B 30 mm
thickness 3 mm
transition length 140 mm
Y offset 70 mm
Z offset 35 mm
end chamfers none

Rectangle-to-rectangle duct adapter STL file 104x34 mm to 100x30 mm – transition: 50 mm (📦 #4929)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL file 104x34 mm to 100x30 mm – transition: 50 mm
Rectangular pipe adapter downloadable as STL 3D file. The internal cross-section on side A is 104x34 mm (rectangular), while side B is 100x30 mm (rectangular). The insertion length on side A is 25 mm, while on side B it is 15 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 104 mm
side A internal height 34 mm
sleeve length on side A 25 mm
side B internal width 100 mm
side B internal height 30 mm
sleeve length on side B 15 mm
thickness 2 mm
transition length 50 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular pipe adapter STL 3D file 60x60 mm to 60x60 mm – transition: 60 mm (📦 #3738)

1 object(s) - format STL
Rectangular pipe adapter STL 3D file 60x60 mm to 60x60 mm – transition: 60 mm
Rectangular duct transition downloadable as STL 3D file. Both ends have the same internal cross-section, 60x60 mm, with a square shape. The sleeve insertion length is the same on both sides, 20 mm. The transition section runs for 60 mm and the overall length is 100 mm, sleeves included. 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. An offset of 30 mm along the Y axis is applied to side B with respect to side A.
Parameter Value Unit
side A internal width 60 mm
side A internal height 60 mm
sleeve length on side A 20 mm
side B internal width 60 mm
side B internal height 60 mm
sleeve length on side B 20 mm
thickness 4 mm
transition length 60 mm
Y offset 30 mm
Z offset 0 mm
end chamfers none

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

Rectangular tube adapter STL file 120x60 mm to 114x54 mm – transition: 140 mm (📦 #7219)

1 object(s) - format STL
Rectangular tube adapter STL file 120x60 mm to 114x54 mm – transition: 140 mm
3D STL file for rectangular tube adapter. Side A offers an internal cross-section of 120x60 mm (rectangular) and side B uses 114x54 mm (rectangular). Each sleeve provides an insertion length of 30 mm. Between the two sleeves, the transition section adds 140 mm, giving an overall length of 200 mm. External chamfers are added at the ends to make it easier to push the adapter into ducts or pipes. An offset of 35 mm along the Y axis and 70 mm along the Z axis is applied to side B with respect to side A.
Parameter Value Unit
side A internal width 120 mm
side A internal height 60 mm
sleeve length on side A 30 mm
side B internal width 114 mm
side B internal height 54 mm
sleeve length on side B 30 mm
thickness 3 mm
transition length 140 mm
Y offset 35 mm
Z offset 70 mm
end chamfers outside

Rectangular pipe adapter STL 3D file 90x90 mm to 200x20 mm – transition: 70 mm (📦 #5022)

1 object(s) - format STL
Rectangular pipe adapter STL 3D file 90x90 mm to 200x20 mm – transition: 70 mm
Rectangular conduit adapter provided as 3D STL file. The internal cross-section on side A is 90x90 mm (square), while side B is 200x20 mm (rectangular). The sleeve on side A provides an insertion length of 15 mm, and the sleeve on side B 10 mm. Between the two sleeves, the transition section adds 70 mm, giving an overall length of 95 mm. The internal edges at the ends are chamfered to help guide the duct during insertion. Relative to side A, side B is shifted by 35 mm along the Z axis.
Parameter Value Unit
side A internal width 90 mm
side A internal height 90 mm
sleeve length on side A 15 mm
side B internal width 200 mm
side B internal height 20 mm
sleeve length on side B 10 mm
thickness 2 mm
transition length 70 mm
Y offset 0 mm
Z offset 35 mm
end chamfers inside

Rectangular duct adapter STL file 90x90 mm to 200x20 mm – transition: 60 mm (📦 #5020)

1 object(s) - format STL
Rectangular duct adapter STL file 90x90 mm to 200x20 mm – transition: 60 mm
Rectangular duct connector exported as STL 3D file. The internal cross-section on side A is 90x90 mm (square), while side B is 200x20 mm (rectangular). The sleeve on side A provides an insertion length of 15 mm, and the sleeve on side B 10 mm. The transition section between the two sides is 60 mm long, for an overall length of 85 mm (side A sleeve, transition and side B sleeve). Internal chamfers are added at the ends to make assembly and duct insertion easier. An offset of 30 mm along the Z axis is applied to side B with respect to side A.
Parameter Value Unit
side A internal width 90 mm
side A internal height 90 mm
sleeve length on side A 15 mm
side B internal width 200 mm
side B internal height 20 mm
sleeve length on side B 10 mm
thickness 2 mm
transition length 60 mm
Y offset 0 mm
Z offset 30 mm
end chamfers inside

Rectangle-to-rectangle duct adapter STL 3D file 90x90 mm to 200x20 mm – transition: 50 mm (📦 #5019)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL 3D file 90x90 mm to 200x20 mm – transition: 50 mm
Rectangular adapter exported as STL 3D file. Side A uses an internal cross-section of 90x90 mm (square), whereas side B is 200x20 mm (rectangular). The insertion length on side A is 15 mm, while on side B it is 10 mm. The transition section between the two sides is 50 mm long, for an overall length of 75 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. Relative to side A, side B is shifted by 25 mm along the Z axis.
Parameter Value Unit
side A internal width 90 mm
side A internal height 90 mm
sleeve length on side A 15 mm
side B internal width 200 mm
side B internal height 20 mm
sleeve length on side B 10 mm
thickness 2 mm
transition length 50 mm
Y offset 0 mm
Z offset 25 mm
end chamfers inside

Rectangle-to-rectangle duct adapter STL 3D file 111.4x54.4 mm to 110.4x54.4 mm – transition: 20 mm (📦 #9918)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL 3D file 111.4x54.4 mm to 110.4x54.4 mm – transition: 20 mm
Rectangular adapter exported as STL 3D file. Side A uses an internal cross-section of 111.4x54.4 mm (rectangular), whereas side B is 110.4x54.4 mm (rectangular). Both side A and side B sleeves share the same insertion length of 25 mm. The transition section runs for 20 mm and the overall length is 70 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 111.4 mm
side A internal height 54.4 mm
sleeve length on side A 25 mm
side B internal width 110.4 mm
side B internal height 54.4 mm
sleeve length on side B 25 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 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 duct adapter STL 3D file 38x58.6 mm to 80.5x80.5 mm – transition: 30 mm (📦 #5062)

1 object(s) - format STL
Rectangular duct adapter STL 3D file 38x58.6 mm to 80.5x80.5 mm – transition: 30 mm
Rectangular pipe adapter provided as 3D STL file. The internal cross-section on side A is 38x58.6 mm (rectangular), while side B is 80.5x80.5 mm (square). The insertion length on side A is 16 mm, while on side B it is 25 mm. The transition section runs for 30 mm and the overall length is 71 mm, sleeves included. The ends are left without chamfers, with sharp inner and outer edges. Side B is offset by 15 mm along the Y axis and 15 mm along the Z axis relative to side A.
Parameter Value Unit
side A internal width 38 mm
side A internal height 58.6 mm
sleeve length on side A 16 mm
side B internal width 80.5 mm
side B internal height 80.5 mm
sleeve length on side B 25 mm
thickness 2 mm
transition length 30 mm
Y offset 15 mm
Z offset 15 mm
end chamfers none

Rectangular duct adapter STL 3D file 38x54.6 mm to 80.5x80.5 mm – transition: 52 mm (📦 #5098)

1 object(s) - format STL
Rectangular duct adapter STL 3D file 38x54.6 mm to 80.5x80.5 mm – transition: 52 mm
Rectangular tube adapter provided as 3D STL file. Side A offers an internal cross-section of 38x54.6 mm (rectangular) and side B uses 80.5x80.5 mm (square). The sleeve on side A provides an insertion length of 16 mm, and the sleeve on side B 25 mm. The transition section between the two sides is 52 mm long, for an overall length of 93 mm (side A sleeve, transition and side B sleeve). No chamfers are applied at the ends; both inner and outer edges remain sharp. An offset of 26 mm along the Y axis is applied to side B with respect to side A.
Parameter Value Unit
side A internal width 38 mm
side A internal height 54.6 mm
sleeve length on side A 16 mm
side B internal width 80.5 mm
side B internal height 80.5 mm
sleeve length on side B 25 mm
thickness 2 mm
transition length 52 mm
Y offset 26 mm
Z offset 0 mm
end chamfers none

Rectangular pipe adapter STL 3D file 77x34 mm to 77x34 mm – transition: 30 mm (📦 #4959)

1 object(s) - format STL
Rectangular pipe adapter STL 3D file 77x34 mm to 77x34 mm – transition: 30 mm
Rectangular duct adapter exported as STL 3D file. On both side A and side B, the internal cross-section is 77x34 mm, with a rectangular geometry. Both side A and side B sleeves share the same insertion length of 30 mm. Between the two sleeves, the transition section adds 30 mm, giving an overall length of 90 mm. Internal chamfers are added at the ends to make assembly and duct insertion easier.
Parameter Value Unit
side A internal width 77 mm
side A internal height 34 mm
sleeve length on side A 30 mm
side B internal width 77 mm
side B internal height 34 mm
sleeve length on side B 30 mm
thickness 2 mm
transition length 30 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular duct adapter STL 3D file 96x51.2 mm to 40x26.2 mm – transition: 55 mm (📦 #4439)

1 object(s) - format STL
Rectangular duct adapter STL 3D file 96x51.2 mm to 40x26.2 mm – transition: 55 mm
Rectangular duct transition downloadable as STL 3D file. The internal cross-section on side A is 96x51.2 mm (rectangular), while side B is 40x26.2 mm (rectangular). Both side A and side B sleeves share the same insertion length of 30 mm. Between the two sleeves, the transition section adds 55 mm, giving an overall length of 115 mm. Inner and outer edges at both ends are left unchamfered. Relative to side A, side B is shifted by 25 mm along the Z axis.
Parameter Value Unit
side A internal width 96 mm
side A internal height 51.2 mm
sleeve length on side A 30 mm
side B internal width 40 mm
side B internal height 26.2 mm
sleeve length on side B 30 mm
thickness 2 mm
transition length 55 mm
Y offset 0 mm
Z offset 25 mm
end chamfers none

Rectangular pipe adapter STL 3D file 96x51.2 mm to 40x23.2 mm – transition: 60 mm (📦 #4438)

1 object(s) - format STL
Rectangular pipe adapter STL 3D file 96x51.2 mm to 40x23.2 mm – transition: 60 mm
Rectangular duct connector downloadable as STL 3D file. The internal cross-section on side A is 96x51.2 mm (rectangular), while side B is 40x23.2 mm (rectangular). The sleeve insertion length is the same on both sides, 30 mm. The transition section runs for 60 mm and the overall length is 120 mm, sleeves included. No chamfers are applied at the ends; both inner and outer edges remain sharp. Side B is offset by 24 mm along the Z axis relative to side A.
Parameter Value Unit
side A internal width 96 mm
side A internal height 51.2 mm
sleeve length on side A 30 mm
side B internal width 40 mm
side B internal height 23.2 mm
sleeve length on side B 30 mm
thickness 2 mm
transition length 60 mm
Y offset 0 mm
Z offset 24 mm
end chamfers none

Rectangle-to-rectangle duct adapter STL 3D file 100x40 mm to 60x60 mm – transition: 50 mm (📦 #4205)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL 3D file 100x40 mm to 60x60 mm – transition: 50 mm
Rectangular conduit adapter downloadable as STL 3D file. Side A offers an internal cross-section of 100x40 mm (rectangular) and side B uses 60x60 mm (square). The sleeve insertion length is the same on both sides, 20 mm. The transition section between the two sides is 50 mm long, for an overall length of 90 mm (side A sleeve, transition and side B sleeve). Inner and outer edges at both ends are left unchamfered.
Parameter Value Unit
side A internal width 100 mm
side A internal height 40 mm
sleeve length on side A 20 mm
side B internal width 60 mm
side B internal height 60 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 none

Rectangular tube adapter STL file 79x33 mm to 62x24 mm – transition: 20 mm (📦 #4059)

1 object(s) - format STL
Rectangular tube adapter STL file 79x33 mm to 62x24 mm – transition: 20 mm
Rectangular duct fitting exported as STL 3D file. Side A offers an internal cross-section of 79x33 mm (rectangular) and side B uses 62x24 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). The internal edges at the ends are chamfered to help guide the duct during insertion.
Parameter Value Unit
side A internal width 79 mm
side A internal height 33 mm
sleeve length on side A 10 mm
side B internal width 62 mm
side B internal height 24 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

Rectangle-to-rectangle duct adapter STL file 200x20 mm to 100x50 mm – transition: 55 mm (📦 #4707)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL file 200x20 mm to 100x50 mm – transition: 55 mm
Rectangular duct fitting provided as 3D STL file. Side A uses an internal cross-section of 200x20 mm (rectangular), whereas side B is 100x50 mm (rectangular). The sleeve insertion length is the same on both sides, 30 mm. Between the two sleeves, the transition section adds 55 mm, giving an overall length of 115 mm. Inner and outer edges at both ends are left unchamfered. An offset of 12.7 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 30 mm
side B internal width 100 mm
side B internal height 50 mm
sleeve length on side B 30 mm
thickness 2 mm
transition length 55 mm
Y offset 0 mm
Z offset 12.7 mm
end chamfers none

Rectangle-to-rectangle duct adapter STL file 38x54.6 mm to 80.5x80.5 mm – transition: 52 mm (📦 #5099)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL file 38x54.6 mm to 80.5x80.5 mm – transition: 52 mm
Rectangular duct transition exported as STL 3D file. The internal cross-section on side A is 38x54.6 mm (rectangular), while side B is 80.5x80.5 mm (square). On side A, the sleeve length is 16 mm, and on side B it is 25 mm. The transition section between the two sides is 52 mm long, for an overall length of 93 mm (side A sleeve, transition and side B sleeve). Inner and outer edges at both ends are left unchamfered. Relative to side A, side B is shifted by 26 mm along the Z axis.
Parameter Value Unit
side A internal width 38 mm
side A internal height 54.6 mm
sleeve length on side A 16 mm
side B internal width 80.5 mm
side B internal height 80.5 mm
sleeve length on side B 25 mm
thickness 2 mm
transition length 52 mm
Y offset 0 mm
Z offset 26 mm
end chamfers none

Rectangle-to-rectangle duct adapter STL file 96x51.2 mm to 40x26.2 mm – transition: 55 mm (📦 #4478)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL file 96x51.2 mm to 40x26.2 mm – transition: 55 mm
3D STL file for rectangular vent adapter. The internal cross-section on side A is 96x51.2 mm (rectangular), while side B is 40x26.2 mm (rectangular). The sleeve insertion length is the same on both sides, 30 mm. Between the two sleeves, the transition section adds 55 mm, giving an overall length of 115 mm. The ends are left without chamfers, with sharp inner and outer edges. An offset of 12.5 mm along the Z axis is applied to side B with respect to side A.
Parameter Value Unit
side A internal width 96 mm
side A internal height 51.2 mm
sleeve length on side A 30 mm
side B internal width 40 mm
side B internal height 26.2 mm
sleeve length on side B 30 mm
thickness 2 mm
transition length 55 mm
Y offset 0 mm
Z offset 12.5 mm
end chamfers none

Rectangular duct adapter STL file 91.2x46.4 mm to 40x21 mm – transition: 55 mm (📦 #4479)

1 object(s) - format STL
Rectangular duct adapter STL file 91.2x46.4 mm to 40x21 mm – transition: 55 mm
Rectangular duct connector downloadable as STL 3D file. Side A offers an internal cross-section of 91.2x46.4 mm (rectangular) and side B uses 40x21 mm (rectangular). Each sleeve provides an insertion length of 30 mm. Between the two sleeves, the transition section adds 55 mm, giving an overall length of 115 mm. Inner and outer edges at both ends are left unchamfered. An offset of 12.7 mm along the Z axis is applied to side B with respect to side A.
Parameter Value Unit
side A internal width 91.2 mm
side A internal height 46.4 mm
sleeve length on side A 30 mm
side B internal width 40 mm
side B internal height 21 mm
sleeve length on side B 30 mm
thickness 2 mm
transition length 55 mm
Y offset 0 mm
Z offset 12.7 mm
end chamfers none

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 38x58.6 mm to 80.5x80.5 mm – transition: 30 mm (📦 #5061)

1 object(s) - format STL
Rectangular duct adapter STL 3D file 38x58.6 mm to 80.5x80.5 mm – transition: 30 mm
Rectangular duct fitting exported as STL 3D file. The internal cross-section on side A is 38x58.6 mm (rectangular), while side B is 80.5x80.5 mm (square). The insertion length on side A is 16 mm, while on side B it is 25 mm. The transition section runs for 30 mm and the overall length is 71 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 38 mm
side A internal height 58.6 mm
sleeve length on side A 16 mm
side B internal width 80.5 mm
side B internal height 80.5 mm
sleeve length on side B 25 mm
thickness 2 mm
transition length 30 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside