Custom Rectangular pipe adapter STL file 74x49 mm to 110x55 mm – transition: 300 mm 📦#6457

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Rectangular adapter downloadable as STL 3D file. Side A offers an internal cross-section of 74x49 mm (rectangular) and side B uses 110x55 mm (rectangular). Each sleeve provides an insertion length of 100 mm. The transition section between the two sides is 300 mm long, for an overall length of 500 mm (side A sleeve, transition and side B sleeve). Wall thickness is minimal at 1 mm. The internal edges at the ends are chamfered to help guide the duct during insertion. Side B is offset by 150 mm along the Y axis and 150 mm along the Z axis relative to side A.
Generation date: 2026-01-10
3D Model Rectangular pipe adapter STL file 74x49 mm to 110x55 mm – transition: 300 mm

3D model download

Free
  • rectangular-to-rectangular-duc_model6457-nb0_dd{id}.stl : 223.9 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 74 mm (≃2.91 in)
#2 side A internal height 49 mm (≃1 15/16 in)
#3 sleeve length on side A 100 mm (≃3 15/16 in)
#4 side B internal width 110 mm (≃4.33 in)
#5 side B internal height 55 mm (≃2.17 in)
#6 sleeve length on side B 100 mm (≃3 15/16 in)
#7 thickness 1 mm (≃0.04 in)
#8 transition length 300 mm (≃11 13/16 in)
#9 Y offset 150 mm (≃5.91 in)
#10 Z offset 150 mm (≃5.91 in)
#11 end chamfers inside
Metadata Value
external width on side A 76 mm (≃3 in)
external height on side A 51 mm (≃2 in)
external width on side B 112 mm (≃4.41 in)
external height on side B 57 mm (≃2 1/4 in)
total length 500 mm (≃19 11/16 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 110x55 mm to 110x55 mm – transition: 240 mm (📦 #5344)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL 3D file 110x55 mm to 110x55 mm – transition: 240 mm
Rectangular duct transition provided as 3D STL file. Both ends have the same internal cross-section, 110x55 mm, with a rectangular shape. Both side A and side B sleeves share the same insertion length of 30 mm. The transition section between the two sides is 240 mm long, for an overall length of 300 mm (side A sleeve, transition and side B sleeve). Internal chamfers are added at the ends to make assembly and duct insertion easier. Relative to side A, side B is shifted by 100 mm along the Z axis.
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 30 mm
thickness 2 mm
transition length 240 mm
Y offset 0 mm
Z offset 100 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 tube adapter STL file 106x51 mm to 106x51 mm – transition: 240 mm (📦 #5370)

1 object(s) - format STL
Rectangular tube adapter STL file 106x51 mm to 106x51 mm – transition: 240 mm
3D STL file for rectangular tube adapter. Side A and side B share the same internal cross-section, 106x51 mm, with a rectangular profile. Each sleeve provides an insertion length of 30 mm. Between the two sleeves, the transition section adds 240 mm, giving an overall length of 300 mm. No chamfers are applied at the ends; both inner and outer edges remain sharp. An offset of 100 mm along the Z axis is applied to side B with respect to side A.
Parameter Value Unit
side A internal width 106 mm
side A internal height 51 mm
sleeve length on side A 30 mm
side B internal width 106 mm
side B internal height 51 mm
sleeve length on side B 30 mm
thickness 2 mm
transition length 240 mm
Y offset 0 mm
Z offset 100 mm
end chamfers none

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 60x60 mm to 80x80 mm – transition: 180 mm (📦 #3970)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL file 60x60 mm to 80x80 mm – transition: 180 mm
Rectangular duct connector downloadable as STL 3D file. Side A offers an internal cross-section of 60x60 mm (square) and side B uses 80x80 mm (square). The sleeve insertion length is the same on both sides, 10 mm. The transition section runs for 180 mm and the overall length is 200 mm, sleeves included. The wall is thin, with a thickness of 1 mm. Internal chamfers are added at the ends to make assembly and duct insertion easier. Side B is offset by 90 mm along the Y axis relative to side A.
Parameter Value Unit
side A internal width 60 mm
side A internal height 60 mm
sleeve length on side A 10 mm
side B internal width 80 mm
side B internal height 80 mm
sleeve length on side B 10 mm
thickness 1 mm
transition length 180 mm
Y offset 90 mm
Z offset 0 mm
end chamfers inside

Rectangular tube adapter STL file 220x90 mm to 180x95 mm – transition: 140 mm (📦 #3981)

1 object(s) - format STL
Rectangular tube adapter STL file 220x90 mm to 180x95 mm – transition: 140 mm
Rectangular duct connector downloadable as STL 3D file. The internal cross-section on side A is 220x90 mm (rectangular), while side B is 180x95 mm (rectangular). Each sleeve provides an insertion length of 40 mm. The transition section runs for 140 mm and the overall length is 220 mm, sleeves included. External chamfers are added at the ends to make it easier to push the adapter into ducts or pipes. An offset of 70 mm along the Y axis is applied to side B with respect 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 180 mm
side B internal height 95 mm
sleeve length on side B 40 mm
thickness 3 mm
transition length 140 mm
Y offset 70 mm
Z offset 0 mm
end chamfers outside

Rectangular duct adapter STL 3D file 200x20 mm to 100x50 mm – transition: 100 mm (📦 #4706)

1 object(s) - format STL
Rectangular duct adapter STL 3D file 200x20 mm to 100x50 mm – transition: 100 mm
3D STL file for rectangular pipe adapter. The internal cross-section on side A is 200x20 mm (rectangular), while side B is 100x50 mm (rectangular). The sleeve on side A provides an insertion length of 60 mm, and the sleeve on side B 50 mm. Between the two sleeves, the transition section adds 100 mm, giving an overall length of 210 mm. Wall thickness is generous (4 mm). Inner and outer edges at both ends are left unchamfered. An offset of 50 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 50 mm
end chamfers none

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 file 120x40 mm to 120x40 mm – transition: 80 mm (📦 #3965)

1 object(s) - format STL
Rectangular duct adapter STL file 120x40 mm to 120x40 mm – transition: 80 mm
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.
Parameter Value Unit
side A internal width 120 mm
side A internal height 40 mm
sleeve length on side A 20 mm
side B internal width 120 mm
side B internal height 40 mm
sleeve length on side B 20 mm
thickness 3 mm
transition length 80 mm
Y offset 40 mm
Z offset 30 mm
end chamfers inside

Rectangle-to-rectangle duct adapter STL 3D file 220x90 mm to 180x95 mm – transition: 130 mm (📦 #3983)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL 3D file 220x90 mm to 180x95 mm – transition: 130 mm
Rectangular duct transition provided as 3D STL file. Side A offers an internal cross-section of 220x90 mm (rectangular) and side B uses 180x95 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 130 mm, giving an overall length of 190 mm. The outer edges at the ends are chamfered, which simplifies inserting the adapter into the mating duct. Relative to side A, side B is shifted by 65 mm along the Y axis.
Parameter Value Unit
side A internal width 220 mm
side A internal height 90 mm
sleeve length on side A 30 mm
side B internal width 180 mm
side B internal height 95 mm
sleeve length on side B 30 mm
thickness 3 mm
transition length 130 mm
Y offset 65 mm
Z offset 0 mm
end chamfers outside

Rectangular pipe adapter STL 3D file 200x20 mm to 100x50 mm – transition: 100 mm (📦 #4705)

1 object(s) - format STL
Rectangular pipe adapter STL 3D file 200x20 mm to 100x50 mm – transition: 100 mm
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 pipe adapter STL file 220x90 mm to 220x40 mm – transition: 100 mm (📦 #9230)

1 object(s) - format STL
Rectangular pipe adapter STL file 220x90 mm to 220x40 mm – transition: 100 mm
Rectangular adapter exported as STL 3D file. Side A offers an internal cross-section of 220x90 mm (rectangular) and side B uses 220x40 mm (rectangular). On side A, the sleeve length is 30 mm, and on side B it is 50 mm. The transition section between the two sides is 100 mm long, for an overall length of 180 mm (side A sleeve, transition and side B sleeve). External chamfers are added at the ends to make it easier to push the adapter into ducts or pipes. Side B is offset by 50 mm along the Y 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 30 mm
side B internal width 220 mm
side B internal height 40 mm
sleeve length on side B 50 mm
thickness 3 mm
transition length 100 mm
Y offset 50 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 220x90 mm to 180x95 mm – transition: 110 mm (📦 #3986)

1 object(s) - format STL
Rectangular tube adapter STL file 220x90 mm to 180x95 mm – transition: 110 mm
3D STL file for rectangular duct connector. Side A offers an internal cross-section of 220x90 mm (rectangular) and side B uses 180x95 mm (rectangular). Each sleeve provides an insertion length of 30 mm. The transition section between the two sides is 110 mm long, for an overall length of 170 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. Relative to side A, side B is shifted by 55 mm along the Y axis.
Parameter Value Unit
side A internal width 220 mm
side A internal height 90 mm
sleeve length on side A 30 mm
side B internal width 180 mm
side B internal height 95 mm
sleeve length on side B 30 mm
thickness 3 mm
transition length 110 mm
Y offset 55 mm
Z offset 0 mm
end chamfers outside

Rectangular duct adapter STL file 200x120 mm to 200x120 mm – transition: 100 mm (📦 #4495)

1 object(s) - format STL
Rectangular duct adapter STL file 200x120 mm to 200x120 mm – transition: 100 mm
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 duct adapter STL file 220x90 mm to 180x95 mm – transition: 100 mm (📦 #3989)

1 object(s) - format STL
Rectangular duct adapter STL file 220x90 mm to 180x95 mm – transition: 100 mm
3D STL file for rectangular vent adapter. Side A uses an internal cross-section of 220x90 mm (rectangular), whereas side B is 180x95 mm (rectangular). Each sleeve provides an insertion length of 30 mm. The transition section between the two sides is 100 mm long, for an overall length of 160 mm (side A sleeve, transition and side B sleeve). External chamfers at the ends help the adapter slide and seat more easily in the duct system. Relative to side A, side B is shifted by 50 mm along the Y axis.
Parameter Value Unit
side A internal width 220 mm
side A internal height 90 mm
sleeve length on side A 30 mm
side B internal width 180 mm
side B internal height 95 mm
sleeve length on side B 30 mm
thickness 3 mm
transition length 100 mm
Y offset 50 mm
Z offset 0 mm
end chamfers outside

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

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

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

Rectangle-to-rectangle duct adapter STL 3D file 90x90 mm to 200x90 mm – transition: 100 mm (📦 #3788)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL 3D file 90x90 mm to 200x90 mm – transition: 100 mm
Rectangular tube adapter exported as STL 3D file. Side A uses an internal cross-section of 90x90 mm (square), whereas side B is 200x90 mm (rectangular). The sleeve insertion length is the same on both sides, 40 mm. The transition section between the two sides is 100 mm long, for an overall length of 180 mm (side A sleeve, transition and side B sleeve). The shell is very thick, with 6 mm wall thickness. The internal edges at the ends are chamfered to help guide the duct during insertion. Side B is offset by 50 mm along the Y axis relative to side A.
Parameter Value Unit
side A internal width 90 mm
side A internal height 90 mm
sleeve length on side A 40 mm
side B internal width 200 mm
side B internal height 90 mm
sleeve length on side B 40 mm
thickness 6 mm
transition length 100 mm
Y offset 50 mm
Z offset 0 mm
end chamfers inside

Rectangle-to-rectangle duct adapter STL 3D file 193x73 mm to 193x73 mm – transition: 100 mm (📦 #4074)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL 3D file 193x73 mm to 193x73 mm – transition: 100 mm
3D STL file for rectangular pipe adapter. On both side A and side B, the internal cross-section is 193x73 mm, with a rectangular geometry. The sleeve insertion length is the same on both sides, 50 mm. The transition section between the two sides is 100 mm long, for an overall length of 200 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 193 mm
side A internal height 73 mm
sleeve length on side A 50 mm
side B internal width 193 mm
side B internal height 73 mm
sleeve length on side B 50 mm
thickness 3 mm
transition length 100 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Rectangular tube adapter STL file 130x130 mm to 130x130 mm – transition: 20 mm (📦 #4812)

1 object(s) - format STL
Rectangular tube adapter STL file 130x130 mm to 130x130 mm – transition: 20 mm
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 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

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

Rectangular tube adapter STL file 115x115 mm to 225x90 mm – transition: 140 mm (📦 #7034)

1 object(s) - format STL
Rectangular tube adapter STL file 115x115 mm to 225x90 mm – transition: 140 mm
3D STL file for rectangular duct sleeve. Side A offers an internal cross-section of 115x115 mm (square) and side B uses 225x90 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 at the ends help the adapter slide and seat more easily in the duct system.
Parameter Value Unit
side A internal width 115 mm
side A internal height 115 mm
sleeve length on side A 40 mm
side B internal width 225 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

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