Custom Rectangular tube adapter STL 3D file 100x200 mm to 60x204 mm – transition: 40 mm 📦#10511

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Rectangular duct transition provided as 3D STL file. Side A uses an internal cross-section of 100x200 mm (rectangular), whereas side B is 60x204 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 40 mm, giving an overall length of 100 mm. No chamfers are applied at the ends; both inner and outer edges remain sharp. Relative to side A, side B is shifted by 20 mm along the Y axis and 20 mm along the Z axis.
Generation date: 2026-07-28
3D Model Rectangular tube adapter STL 3D file 100x200 mm to 60x204 mm – transition: 40 mm

3D model download

Free
  • rectangular-to-rectangular-duc_model10511-nb0_dd{id}.stl : 463.6 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 100 mm (≃3 15/16 in)
#2 side A internal height 200 mm (≃7 7/8 in)
#3 sleeve length on side A 30 mm (≃1 3/16 in)
#4 side B internal width 60 mm (≃2 3/8 in)
#5 side B internal height 204 mm (≃8.03 in)
#6 sleeve length on side B 30 mm (≃1 3/16 in)
#7 thickness 3 mm (≃1/8 in)
#8 transition length 40 mm (≃1 9/16 in)
#9 Y offset 20 mm (≃0.79 in)
#10 Z offset 20 mm (≃0.79 in)
#11 end chamfers none
Metadata Value
external width on side A 106 mm (≃4 3/16 in)
external height on side A 206 mm (≃8 1/8 in)
external width on side B 66 mm (≃2.60 in)
external height on side B 210 mm (≃8.27 in)
total length 100 mm (≃3 15/16 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 

Rectangular pipe adapter STL file 94x194 mm to 60x204 mm – transition: 40 mm (📦 #10940)

1 object(s) - format STL
Rectangular pipe adapter STL file 94x194 mm to 60x204 mm – transition: 40 mm
Rectangular vent adapter provided as 3D STL file. Side A offers an internal cross-section of 94x194 mm (rectangular) and side B uses 60x204 mm (rectangular). Each sleeve provides an insertion length of 30 mm. Between the two sleeves, the transition section adds 40 mm, giving an overall length of 100 mm. Inner and outer edges at both ends are left unchamfered. An offset of 20 mm along the Y axis and 20 mm along the Z axis is applied to side B with respect to side A.
Parameter Value Unit
side A internal width 94 mm
side A internal height 194 mm
sleeve length on side A 30 mm
side B internal width 60 mm
side B internal height 204 mm
sleeve length on side B 30 mm
thickness 3 mm
transition length 40 mm
Y offset 20 mm
Z offset 20 mm
end chamfers none

Rectangular duct adapter STL 3D file 38.5x187.5 mm to 36x187.5 mm – transition: 20 mm (📦 #11922)

1 object(s) - format STL
Rectangular duct adapter STL 3D file 38.5x187.5 mm to 36x187.5 mm – transition: 20 mm
3D STL file for rectangular duct fitting. Side A uses an internal cross-section of 38.5x187.5 mm (rectangular), whereas side B is 36x187.5 mm (rectangular). The sleeve on side A provides an insertion length of 10 mm, and the sleeve on side B 5 mm. The transition section runs for 20 mm and the overall length is 35 mm, sleeves included. The ends are left without chamfers, with sharp inner and outer edges.
Parameter Value Unit
side A internal width 38.5 mm
side A internal height 187.5 mm
sleeve length on side A 10 mm
side B internal width 36 mm
side B internal height 187.5 mm
sleeve length on side B 5 mm
thickness 3 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none

Rectangular pipe adapter STL file 38x177 mm to 38x177 mm – transition: 20 mm (📦 #11924)

1 object(s) - format STL
Rectangular pipe adapter STL file 38x177 mm to 38x177 mm – transition: 20 mm
Rectangular adapter exported as STL 3D file. Both ends have the same internal cross-section, 38x177 mm, with a rectangular shape. The sleeve on side A provides an insertion length of 10 mm, and the sleeve on side B 5 mm. Between the two sleeves, the transition section adds 20 mm, giving an overall length of 35 mm. The ends are left without chamfers, with sharp inner and outer edges.
Parameter Value Unit
side A internal width 38 mm
side A internal height 177 mm
sleeve length on side A 10 mm
side B internal width 38 mm
side B internal height 177 mm
sleeve length on side B 5 mm
thickness 3 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none

Rectangular duct adapter STL file 37.5x178 mm to 36x178 mm – transition: 20 mm (📦 #11923)

1 object(s) - format STL
Rectangular duct adapter STL file 37.5x178 mm to 36x178 mm – transition: 20 mm
3D STL file for rectangular duct sleeve. The internal cross-section on side A is 37.5x178 mm (rectangular), while side B is 36x178 mm (rectangular). On side A, the sleeve length is 10 mm, and on side B it is 5 mm. The transition section between the two sides is 20 mm long, for an overall length of 35 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 37.5 mm
side A internal height 178 mm
sleeve length on side A 10 mm
side B internal width 36 mm
side B internal height 178 mm
sleeve length on side B 5 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 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 duct adapter STL file 203.2x203.2 mm to 203.2x203.2 mm – transition: 60 mm (📦 #12208)

1 object(s) - format STL
Rectangular duct adapter STL file 203.2x203.2 mm to 203.2x203.2 mm – transition: 60 mm
Rectangular duct adapter exported as STL 3D file. Side A and side B share the same internal cross-section, 203.2x203.2 mm, with a square profile. The sleeve on side A provides an insertion length of 20 mm, and the sleeve on side B 30 mm. Between the two sleeves, the transition section adds 60 mm, giving an overall length of 110 mm. No chamfers are applied at the ends; both inner and outer edges remain sharp.
Parameter Value Unit
side A internal width 203.2 mm
side A internal height 203.2 mm
sleeve length on side A 20 mm
side B internal width 203.2 mm
side B internal height 203.2 mm
sleeve length on side B 30 mm
thickness 3 mm
transition length 60 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none

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 pipe adapter STL file 203x203 mm to 203x203 mm – transition: 85 mm (📦 #12222)

1 object(s) - format STL
Rectangular pipe adapter STL file 203x203 mm to 203x203 mm – transition: 85 mm
Rectangular vent adapter exported as STL 3D file. Side A and side B share the same internal cross-section, 203x203 mm, with a square profile. The sleeve insertion length is the same on both sides, 30 mm. The transition section between the two sides is 85 mm long, for an overall length of 145 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 203 mm
side A internal height 203 mm
sleeve length on side A 30 mm
side B internal width 203 mm
side B internal height 203 mm
sleeve length on side B 30 mm
thickness 3 mm
transition length 85 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none

Rectangle-to-rectangle duct adapter STL file 60x284.4 mm to 161.9x191 mm – transition: 50 mm (📦 #9631)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL file 60x284.4 mm to 161.9x191 mm – transition: 50 mm
Rectangular vent adapter exported as STL 3D file. The internal cross-section on side A is 60x284.4 mm (rectangular), while side B is 161.9x191 mm (rectangular). The insertion length on side A is 5 mm, while on side B it is 33.5 mm. The transition section between the two sides is 50 mm long, for an overall length of 88.5 mm (side A sleeve, transition and side B sleeve). The shell is thick, with a wall thickness of 4 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 25 mm along the Y axis.
Parameter Value Unit
side A internal width 60 mm
side A internal height 284.4 mm
sleeve length on side A 5 mm
side B internal width 161.9 mm
side B internal height 191 mm
sleeve length on side B 33.5 mm
thickness 4 mm
transition length 50 mm
Y offset 25 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 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 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

Rectangle-to-rectangle duct adapter STL 3D file 112x112 mm to 112x56 mm – transition: 52 mm (📦 #12629)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL 3D file 112x112 mm to 112x56 mm – transition: 52 mm
Rectangular duct fitting exported as STL 3D file. Side A offers an internal cross-section of 112x112 mm (square) and side B uses 112x56 mm (rectangular). The insertion length on side A is 25 mm, while on side B it is 30 mm. The transition section between the two sides is 52 mm long, for an overall length of 107 mm (side A sleeve, transition and side B sleeve). The ends are left without chamfers, with sharp inner and outer edges. Side B is offset by 26 mm along the Z axis relative to side A.
Parameter Value Unit
side A internal width 112 mm
side A internal height 112 mm
sleeve length on side A 25 mm
side B internal width 112 mm
side B internal height 56 mm
sleeve length on side B 30 mm
thickness 2 mm
transition length 52 mm
Y offset 0 mm
Z offset 26 mm
end chamfers none

Rectangular tube adapter STL 3D file 112x112 mm to 112x56 mm – transition: 52 mm (📦 #12627)

1 object(s) - format STL
Rectangular tube adapter STL 3D file 112x112 mm to 112x56 mm – transition: 52 mm
Rectangular duct connector exported as STL 3D file. The internal cross-section on side A is 112x112 mm (square), while side B is 112x56 mm (rectangular). Each sleeve provides an insertion length of 25 mm. Between the two sleeves, the transition section adds 52 mm, giving an overall length of 102 mm. The ends are left without chamfers, with sharp inner and outer edges. Side B is offset by 26 mm along the Z axis relative to side A.
Parameter Value Unit
side A internal width 112 mm
side A internal height 112 mm
sleeve length on side A 25 mm
side B internal width 112 mm
side B internal height 56 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 pipe adapter STL 3D file 203x203 mm to 203x203 mm – transition: 55 mm (📦 #12200)

1 object(s) - format STL
Rectangular pipe adapter STL 3D file 203x203 mm to 203x203 mm – transition: 55 mm
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

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 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 tube adapter STL file 20x90 mm to 80x80 mm – transition: 60 mm (📦 #3973)

1 object(s) - format STL
Rectangular tube adapter STL file 20x90 mm to 80x80 mm – transition: 60 mm
Rectangular vent adapter provided as 3D STL file. Side A offers an internal cross-section of 20x90 mm (rectangular) and side B uses 80x80 mm (square). The sleeve on side A provides an insertion length of 40 mm, and the sleeve on side B 30 mm. Between the two sleeves, the transition section adds 60 mm, giving an overall length of 130 mm. The shell is thick, with a wall thickness of 4 mm. The ends are left without chamfers, with sharp inner and outer edges.
Parameter Value Unit
side A internal width 20 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 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

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 tube adapter STL 3D file 60x284.4 mm to 161.9x191 mm – transition: 50 mm (📦 #9620)

1 object(s) - format STL
Rectangular tube adapter STL 3D file 60x284.4 mm to 161.9x191 mm – transition: 50 mm
3D STL file for rectangular conduit adapter. The internal cross-section on side A is 60x284.4 mm (rectangular), while side B is 161.9x191 mm (rectangular). On side A, the sleeve length is 5 mm, and on side B it is 33.5 mm. The transition section runs for 50 mm and the overall length is 88.5 mm, sleeves included. The shell is thick, with a wall thickness of 5 mm. The internal edges at the ends are chamfered to help guide the duct during insertion. Side B is offset by 25 mm along the Y axis relative to side A.
Parameter Value Unit
side A internal width 60 mm
side A internal height 284.4 mm
sleeve length on side A 5 mm
side B internal width 161.9 mm
side B internal height 191 mm
sleeve length on side B 33.5 mm
thickness 5 mm
transition length 50 mm
Y offset 25 mm
Z offset 0 mm
end chamfers inside