Custom Rectangle-to-rectangle duct adapter STL 3D file 160x110 mm to 107x260 mm – transition: 300 mm 📦#11726

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3D STL file for rectangular tube adapter. The internal cross-section on side A is 160x110 mm (rectangular), while side B is 107x260 mm (rectangular). The insertion length on side A is 20 mm, while on side B it is 100 mm. The transition section between the two sides is 300 mm long, for an overall length of 420 mm (side A sleeve, transition and side B sleeve). Internal chamfers are added at the ends to make assembly and duct insertion easier.
Generation date: 2026-09-15
3D Model Rectangle-to-rectangle duct adapter STL 3D file 160x110 mm to 107x260 mm – transition: 300 mm

3D model download

Free
  • rectangular-to-rectangular-duc_model11726-nb0_dd{id}.stl : 358.7 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 160 mm (≃6 5/16 in)
#2 side A internal height 110 mm (≃4.33 in)
#3 sleeve length on side A 20 mm (≃0.79 in)
#4 side B internal width 107 mm (≃4.21 in)
#5 side B internal height 260 mm (≃10 1/4 in)
#6 sleeve length on side B 100 mm (≃3 15/16 in)
#7 thickness 2 mm (≃0.08 in)
#8 transition length 300 mm (≃11 13/16 in)
#9 Y offset 0 mm (0 in)
#10 Z offset 0 mm (0 in)
#11 end chamfers inside
Metadata Value
external width on side A 164 mm (≃6.46 in)
external height on side A 114 mm (≃4 1/2 in)
external width on side B 111 mm (≃4 3/8 in)
external height on side B 264 mm (≃10.39 in)
total length 420 mm (≃16.54 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 190x100 mm to 187.7x97.7 mm – transition: 180 mm (📦 #12016)

1 object(s) - format STL
Rectangular pipe adapter STL file 190x100 mm to 187.7x97.7 mm – transition: 180 mm
Rectangular pipe adapter exported as STL 3D file. Side A offers an internal cross-section of 190x100 mm (rectangular) and side B uses 187.7x97.7 mm (rectangular). The sleeve insertion length is the same on both sides, 30 mm. The transition section runs for 180 mm and the overall length is 240 mm, sleeves included. Internal chamfers are added at the ends to make assembly and duct insertion easier.
Parameter Value Unit
side A internal width 190 mm
side A internal height 100 mm
sleeve length on side A 30 mm
side B internal width 187.7 mm
side B internal height 97.7 mm
sleeve length on side B 30 mm
thickness 2 mm
transition length 180 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Rectangular duct adapter STL file 190x100 mm to 186.7x96.7 mm – transition: 190 mm (📦 #12015)

1 object(s) - format STL
Rectangular duct adapter STL file 190x100 mm to 186.7x96.7 mm – transition: 190 mm
Rectangular duct sleeve exported as STL 3D file. Side A offers an internal cross-section of 190x100 mm (rectangular) and side B uses 186.7x96.7 mm (rectangular). The sleeve insertion length is the same on both sides, 30 mm. Between the two sleeves, the transition section adds 190 mm, giving an overall length of 250 mm. Internal chamfers are added at the ends to make assembly and duct insertion easier.
Parameter Value Unit
side A internal width 190 mm
side A internal height 100 mm
sleeve length on side A 30 mm
side B internal width 186.7 mm
side B internal height 96.7 mm
sleeve length on side B 30 mm
thickness 3 mm
transition length 190 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 duct adapter STL file 168x32 mm to 203x203 mm – transition: 170 mm (📦 #12179)

1 object(s) - format STL
Rectangular duct adapter STL file 168x32 mm to 203x203 mm – transition: 170 mm
Rectangular duct fitting provided as 3D STL file. Side A uses an internal cross-section of 168x32 mm (rectangular), whereas side B is 203x203 mm (square). Each sleeve provides an insertion length of 20 mm. The transition section between the two sides is 170 mm long, for an overall length of 210 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 168 mm
side A internal height 32 mm
sleeve length on side A 20 mm
side B internal width 203 mm
side B internal height 203 mm
sleeve length on side B 20 mm
thickness 3 mm
transition length 170 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none

Rectangle-to-rectangle duct adapter STL file 165x31.8 mm to 209x209 mm – transition: 150 mm (📦 #12165)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL file 165x31.8 mm to 209x209 mm – transition: 150 mm
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

Rectangle-to-rectangle duct adapter STL file 203.2x203.2 mm to 203.2x203.2 mm – transition: 58 mm (📦 #12120)

1 object(s) - format STL
Rectangle-to-rectangle duct adapter STL file 203.2x203.2 mm to 203.2x203.2 mm – transition: 58 mm
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
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Rectangular tube adapter STL 3D file 171x32 mm to 200x200 mm – transition: 55 mm (📦 #12087)

1 object(s) - format STL
Rectangular tube adapter STL 3D file 171x32 mm to 200x200 mm – transition: 55 mm
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 tube adapter STL file 171x32 mm to 202x202 mm – transition: 55 mm (📦 #12092)

1 object(s) - format STL
Rectangular tube adapter STL file 171x32 mm to 202x202 mm – transition: 55 mm
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.
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 202 mm
side B internal height 202 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 duct adapter STL 3D file 171x32 mm to 209x209 mm – transition: 55 mm (📦 #12052)

1 object(s) - format STL
Rectangular duct adapter STL 3D file 171x32 mm to 209x209 mm – transition: 55 mm
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

Rectangular pipe adapter STL file 300x200 mm to 300x300 mm – transition: 300 mm (📦 #7793)

1 object(s) - format STL
Rectangular pipe adapter STL file 300x200 mm to 300x300 mm – transition: 300 mm
Rectangular duct adapter downloadable as STL 3D file. Side A uses an internal cross-section of 300x200 mm (rectangular), whereas side B is 300x300 mm (square). Each sleeve provides an insertion length of 100 mm. Between the two sleeves, the transition section adds 300 mm, giving an overall length of 500 mm. No chamfers are applied at the ends; both inner and outer edges remain sharp.
Parameter Value Unit
side A internal width 300 mm
side A internal height 200 mm
sleeve length on side A 100 mm
side B internal width 300 mm
side B internal height 300 mm
sleeve length on side B 100 mm
thickness 2 mm
transition length 300 mm
Y offset 0 mm
Z offset 0 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 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 file 220x90 mm to 220x90 mm – transition: 120 mm (📦 #11932)

1 object(s) - format STL
Rectangular pipe adapter STL file 220x90 mm to 220x90 mm – transition: 120 mm
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 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 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

Rectangular pipe adapter STL 3D file 151x81 mm to 151x81 mm – transition: 150 mm (📦 #11869)

1 object(s) - format STL
Rectangular pipe adapter STL 3D file 151x81 mm to 151x81 mm – transition: 150 mm
Rectangular duct fitting exported as STL 3D file. On both side A and side B, the internal cross-section is 151x81 mm, with a rectangular geometry. Both side A and side B sleeves share the same insertion length of 40 mm. The transition section runs for 150 mm and the overall length is 230 mm, sleeves included. Internal chamfers are added at the ends to make assembly and duct insertion easier. Relative to side A, side B is shifted by 40 mm along the Y axis and 40 mm along the Z axis.
Parameter Value Unit
side A internal width 151 mm
side A internal height 81 mm
sleeve length on side A 40 mm
side B internal width 151 mm
side B internal height 81 mm
sleeve length on side B 40 mm
thickness 2 mm
transition length 150 mm
Y offset 40 mm
Z offset 40 mm
end chamfers inside

Rectangular tube adapter STL 3D file 220x73 mm to 220x73 mm – transition: 120 mm (📦 #4273)

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

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

1 object(s) - format STL
Rectangular pipe adapter STL 3D file 150x150 mm to 220x150 mm – transition: 20 mm
3D STL file for rectangular adapter. The internal cross-section on side A is 150x150 mm (square), while side B is 220x150 mm (rectangular). The sleeve on side A provides an insertion length of 9 mm, and the sleeve on side B 60 mm. Between the two sleeves, the transition section adds 20 mm, giving an overall length of 89 mm. Internal chamfers are added at the ends to make assembly and duct insertion easier.
Parameter Value Unit
side A internal width 150 mm
side A internal height 150 mm
sleeve length on side A 9 mm
side B internal width 220 mm
side B internal height 150 mm
sleeve length on side B 60 mm
thickness 2 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

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

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

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

Rectangular tube adapter STL file 120x120 mm to 100x55 mm – transition: 180 mm (📦 #4554)

1 object(s) - format STL
Rectangular tube adapter STL file 120x120 mm to 100x55 mm – transition: 180 mm
Rectangular vent adapter downloadable as STL 3D file. The internal cross-section on side A is 120x120 mm (square), while side B is 100x55 mm (rectangular). On side A, the sleeve length is 20 mm, and on side B it is 10 mm. The transition section between the two sides is 180 mm long, for an overall length of 210 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 120 mm
side A internal height 120 mm
sleeve length on side A 20 mm
side B internal width 100 mm
side B internal height 55 mm
sleeve length on side B 10 mm
thickness 2 mm
transition length 180 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none

Rectangular pipe adapter STL 3D file 60x60 mm to 80x80 mm – transition: 180 mm (📦 #3872)

1 object(s) - format STL
Rectangular pipe adapter STL 3D file 60x60 mm to 80x80 mm – transition: 180 mm
Rectangular conduit adapter exported as STL 3D file. The internal cross-section on side A is 60x60 mm (square), while side B is 80x80 mm (square). The sleeve insertion length is the same on both sides, 10 mm. The transition section between the two sides is 180 mm long, for an overall length of 200 mm (side A sleeve, transition and side B sleeve). The wall is thin, with a thickness of 1 mm. No chamfers are applied at the ends; both inner and outer edges remain sharp.
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 0 mm
Z offset 0 mm
end chamfers none

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