Custom Rectangular tube adapter STL file 171x32 mm to 202x202 mm – transition: 55 mm 📦#12092

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3D STL file for rectangular duct sleeve. Side A uses an internal cross-section of 171x32 mm (rectangular), whereas side B is 202x202 mm (square). The insertion length on side A is 50.8 mm, while on side B it is 100 mm. The transition section between the two sides is 55 mm long, for an overall length of 205.8 mm (side A sleeve, transition and side B sleeve). No chamfers are applied at the ends; both inner and outer edges remain sharp.
Generation date: 2026-09-27
3D Model Rectangular tube adapter STL file 171x32 mm to 202x202 mm – transition: 55 mm

3D model download

Free
  • rectangular-to-rectangular-duc_model12092-nb0_dd{id}.stl : 1.4 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 171 mm (≃6.73 in)
#2 side A internal height 32 mm (≃1 1/4 in)
#3 sleeve length on side A 50.8 mm (2 in)
#4 side B internal width 202 mm (≃7 15/16 in)
#5 side B internal height 202 mm (≃7 15/16 in)
#6 sleeve length on side B 100 mm (≃3 15/16 in)
#7 thickness 3 mm (≃1/8 in)
#8 transition length 55 mm (≃2.17 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 177 mm (≃6.97 in)
external height on side A 38 mm (≃1 1/2 in)
external width on side B 208 mm (≃8 3/16 in)
external height on side B 208 mm (≃8 3/16 in)
total length 205.8 mm (≃8.10 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 duct adapter provided as 3D STL file. Side A offers an internal cross-section of 171x32 mm (rectangular) and side B uses 200x200 mm (square). On side A, the sleeve length is 50.8 mm, and on side B it is 100 mm. The transition section between the two sides is 55 mm long, for an overall length of 205.8 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 171 mm
side A internal height 32 mm
sleeve length on side A 50.8 mm
side B internal width 200 mm
side B internal height 200 mm
sleeve length on side B 100 mm
thickness 3 mm
transition length 55 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none
Rectangular adapter exported as STL 3D file. Side A offers an internal cross-section of 171x32 mm (rectangular) and side B uses 209x209 mm (square). On side A, the sleeve length is 50.8 mm, and on side B it is 100 mm. The transition section runs for 55 mm and the overall length is 205.8 mm, sleeves included. No chamfers are applied at the ends; both inner and outer edges remain sharp.
Parameter Value Unit
side A internal width 171 mm
side A internal height 32 mm
sleeve length on side A 50.8 mm
side B internal width 209 mm
side B internal height 209 mm
sleeve length on side B 100 mm
thickness 3 mm
transition length 55 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none
3D STL file for rectangular conduit adapter. Side A and side B share the same internal cross-section, 130x130 mm, with a square profile. Each sleeve provides an insertion length of 90 mm. The transition section between the two sides is 20 mm long, for an overall length of 200 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 130 mm
side A internal height 130 mm
sleeve length on side A 90 mm
side B internal width 130 mm
side B internal height 130 mm
sleeve length on side B 90 mm
thickness 3 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none
Rectangular adapter exported as STL 3D file. Both ends have the same internal cross-section, 130x130 mm, with a square shape. Each sleeve provides an insertion length of 82 mm. Between the two sleeves, the transition section adds 20 mm, giving an overall length of 184 mm. The ends are left without chamfers, with sharp inner and outer edges.
Parameter Value Unit
side A internal width 130 mm
side A internal height 130 mm
sleeve length on side A 82 mm
side B internal width 130 mm
side B internal height 130 mm
sleeve length on side B 82 mm
thickness 2 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none
3D STL file for rectangular duct adapter. The internal cross-section on side A is 171x32 mm (rectangular), while side B is 210.2x209.9 mm (rectangular). The insertion length on side A is 50.8 mm, while on side B it is 31.8 mm. The transition section runs for 55 mm and the overall length is 137.6 mm, sleeves included. No chamfers are applied at the ends; both inner and outer edges remain sharp.
Parameter Value Unit
side A internal width 171 mm
side A internal height 32 mm
sleeve length on side A 50.8 mm
side B internal width 210.2 mm
side B internal height 209.9 mm
sleeve length on side B 31.8 mm
thickness 3 mm
transition length 55 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none
Rectangular conduit adapter exported as STL 3D file. On both side A and side B, the internal cross-section is 220x90 mm, with a rectangular geometry. Both side A and side B sleeves share the same 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 90 mm
sleeve length on side A 50 mm
side B internal width 220 mm
side B internal height 90 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 sleeve downloadable as STL 3D file. Side A and side B share the same internal cross-section, 203.2x203.2 mm, with a square profile. On side A, the sleeve length is 10 mm, and on side B it is 85 mm. The transition section runs for 58 mm and the overall length is 153 mm, sleeves included. Inner and outer edges at both ends are left unchamfered.
Parameter Value Unit
side A internal width 203.2 mm
side A internal height 203.2 mm
sleeve length on side A 10 mm
side B internal width 203.2 mm
side B internal height 203.2 mm
sleeve length on side B 85 mm
thickness 3 mm
transition length 58 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none
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 tube adapter provided as 3D STL file. On both side A and side B, the internal cross-section is 200x120 mm, with a rectangular geometry. The sleeve insertion length is the same on both sides, 100 mm. The transition section runs for 100 mm and the overall length is 300 mm, sleeves included. 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 120 mm
sleeve length on side A 100 mm
side B internal width 200 mm
side B internal height 120 mm
sleeve length on side B 100 mm
thickness 2 mm
transition length 100 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside
Rectangular pipe adapter provided as 3D STL file. Side A and side B share the same internal cross-section, 100x60 mm, with a rectangular profile. The sleeve on side A provides an insertion length of 30 mm, and the sleeve on side B 70 mm. Between the two sleeves, the transition section adds 20 mm, giving an overall length of 120 mm. The ends are left without chamfers, with sharp inner and outer edges.
Parameter Value Unit
side A internal width 100 mm
side A internal height 60 mm
sleeve length on side A 30 mm
side B internal width 100 mm
side B internal height 60 mm
sleeve length on side B 70 mm
thickness 2 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none
Rectangular duct adapter provided as 3D STL file. Side A offers an internal cross-section of 164.2x68 mm (rectangular) and side B uses 164x67.8 mm (rectangular). On side A, the sleeve length is 80 mm, and on side B it is 100 mm. The transition section between the two sides is 20 mm long, for an overall length of 200 mm (side A sleeve, transition and side B sleeve). The shell is kept very light, with only 1 mm wall thickness. The internal edges at the ends are chamfered to help guide the duct during insertion.
Parameter Value Unit
side A internal width 164.2 mm
side A internal height 68 mm
sleeve length on side A 80 mm
side B internal width 164 mm
side B internal height 67.8 mm
sleeve length on side B 100 mm
thickness 1 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside
Rectangular pipe adapter downloadable as STL 3D file. Both ends have the same internal cross-section, 203x203 mm, with a square shape. The sleeve on side A provides an insertion length of 10 mm, and the sleeve on side B 60 mm. Between the two sleeves, the transition section adds 55 mm, giving an overall length of 125 mm. No chamfers are applied at the ends; both inner and outer edges remain sharp.
Parameter Value Unit
side A internal width 203 mm
side A internal height 203 mm
sleeve length on side A 10 mm
side B internal width 203 mm
side B internal height 203 mm
sleeve length on side B 60 mm
thickness 3 mm
transition length 55 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none
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
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 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 vent adapter downloadable as STL 3D file. On both side A and side B, the internal cross-section is 204x60 mm, with a rectangular geometry. Both side A and side B sleeves share the same insertion length of 50 mm. The transition section runs for 100 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 30 mm along the Z axis relative to side A.
Parameter Value Unit
side A internal width 204 mm
side A internal height 60 mm
sleeve length on side A 50 mm
side B internal width 204 mm
side B internal height 60 mm
sleeve length on side B 50 mm
thickness 2 mm
transition length 100 mm
Y offset 0 mm
Z offset 30 mm
end chamfers none
3D STL file for rectangular pipe adapter. Side A uses an internal cross-section of 165x31.8 mm (rectangular), whereas side B is 209x209 mm (square). Both side A and side B sleeves share the same insertion length of 25.4 mm. The transition section runs for 150 mm and the overall length is 200.8 mm, sleeves included. No chamfers are applied at the ends; both inner and outer edges remain sharp.
Parameter Value Unit
side A internal width 165 mm
side A internal height 31.8 mm
sleeve length on side A 25.4 mm
side B internal width 209 mm
side B internal height 209 mm
sleeve length on side B 25.4 mm
thickness 3 mm
transition length 150 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none
3D STL file for rectangular adapter. Side A and side B share the same internal cross-section, 300x145 mm, with a rectangular profile. The sleeve insertion length is the same on both sides, 85 mm. The transition section between the two sides is 85 mm long, for an overall length of 255 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 300 mm
side A internal height 145 mm
sleeve length on side A 85 mm
side B internal width 300 mm
side B internal height 145 mm
sleeve length on side B 85 mm
thickness 2 mm
transition length 85 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside
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
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 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
3D STL file for rectangular conduit adapter. Side A uses an internal cross-section of 200x20 mm (rectangular), whereas side B is 100x50 mm (rectangular). The insertion length on side A is 60 mm, while on side B it is 50 mm. The transition section runs for 100 mm and the overall length is 210 mm, sleeves included. The shell is thick, with a wall thickness of 4 mm. Inner and outer edges at both ends are left unchamfered. An offset of 30.4 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 60 mm
side B internal width 100 mm
side B internal height 50 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 duct adapter exported as STL 3D file. Both ends have the same internal cross-section, 110x55 mm, with a rectangular shape. The sleeve on side A provides an insertion length of 30 mm, and the sleeve on side B 50 mm. The transition section between the two sides is 20 mm long, for an overall length of 100 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 110 mm
side A internal height 55 mm
sleeve length on side A 30 mm
side B internal width 110 mm
side B internal height 55 mm
sleeve length on side B 50 mm
thickness 2 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside
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