Custom Oval duct transition fitting STL 3D file 152x50 mm to 125x124 mm – transition: 75 mm 📦#5207

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Oval connector available as a STL 3D file. The internal cross-section on side A is 152x50 mm (oval), while on side B it is 125x124 mm (nearly circular). Each sleeve provides a useful length of 50 mm. The transition portion extends over 75 mm and the overall length, sleeves included, is 175 mm. 6 mm of wall thickness delivers significantly higher strength. External chamfers at the ends help with engagement and assembly within the duct system.
Generation date: 2025-12-23
3D Model Oval duct transition fitting STL 3D file 152x50 mm to 125x124 mm – transition: 75 mm

3D model download

Free
  • oval-duct-transition-fitting-w_model5207-nb0_dd{id}.stl : 2.5 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)
Safe download
Instant .zip download — no email, no account

Values for this model

This model was generated by the Oval duct transition fitting / hose-shaped reducer template, with the following values:
Parameter Value
#1 side A internal width 152 mm (≃5.98 in)
#2 side A internal height 50 mm (≃1.97 in)
#3 sleeve length on side A 50 mm (≃1.97 in)
#4 side B internal width 125 mm (≃4.92 in)
#5 side B internal height 124 mm (≃4 7/8 in)
#6 sleeve length on side B 50 mm (≃1.97 in)
#7 thickness 6 mm (≃1/4 in)
#8 transition length 75 mm (≃2 15/16 in)
#9 Y offset 0 mm (0 in)
#10 Z offset 0 mm (0 in)
#11 end chamfers outside
Metadata Value
external width on side A 164 mm (≃6.46 in)
external height on side A 62 mm (≃2 7/16 in)
external width on side B 137 mm (≃5.39 in)
external height on side B 136 mm (≃5.35 in)
total length 175 mm (≃6 7/8 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 widOA
#2 side A internal height heiOA
#3 sleeve length on side A lenSA
#4 side B internal width widOB
#5 side B internal height heiOB
#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 Oval duct transition fitting / hose-shaped reducer 

Oval hose adapter STL file 152x50 mm to 127x125 mm – transition: 75 mm (📦 #5202)

1 object(s) - format STL
Oval hose adapter STL file 152x50 mm to 127x125 mm – transition: 75 mm
STL 3D file for an oval duct fitting. Side A offers an internal cross-section of 152x50 mm (oval) and side B 127x125 mm (nearly circular). The useful length is consistent on both ends: 50 mm. The transition links the two ends over 75 mm, with a total overall length of 175 mm. Wall thickness is very substantial (6 mm). External chamfers at the ends help with engagement and assembly within the duct system.
Parameter Value Unit
side A internal width 152 mm
side A internal height 50 mm
sleeve length on side A 50 mm
side B internal width 127 mm
side B internal height 125 mm
sleeve length on side B 50 mm
thickness 6 mm
transition length 75 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Oval hose adapter STL file 158x40 mm to 113x112 mm – transition: 20 mm (📦 #5266)

1 object(s) - format STL
Oval hose adapter STL file 158x40 mm to 113x112 mm – transition: 20 mm
Oval hose adapter in STL 3D file format. The internal cross-section on side A is 158x40 mm (oval), while on side B it is 113x112 mm (nearly circular). Each sleeve provides a useful length of 30 mm. The central transition occupies 20 mm, bringing the overall length to 80 mm. External chamfers are added at the ends to make it easier to insert the adapter into ducts or hoses.
Parameter Value Unit
side A internal width 158 mm
side A internal height 40 mm
sleeve length on side A 30 mm
side B internal width 113 mm
side B internal height 112 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 outside

Hose-shaped reducer STL 3D file 100x50 mm to 70x68 mm – transition: 20 mm (📦 #6026)

1 object(s) - format STL
Hose-shaped reducer STL 3D file 100x50 mm to 70x68 mm – transition: 20 mm
STL 3D file for an oval duct adapter. Side A offers an internal cross-section of 100x50 mm (oval) and side B 70x68 mm (nearly circular). The sleeves also differ in useful length: 50 mm on side A and 25 mm on side B. The transition section is 20 mm long, for a final overall length of 95 mm. A thickness of 5 mm provides good stiffness. No chamfer is applied at the ends, so both the inner and outer edges remain sharp.
Parameter Value Unit
side A internal width 100 mm
side A internal height 50 mm
sleeve length on side A 50 mm
side B internal width 70 mm
side B internal height 68 mm
sleeve length on side B 25 mm
thickness 5 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none

Oval duct transition adapter STL 3D file 77x75 mm to 60x55 mm – transition: 50 mm (📦 #9178)

1 object(s) - format STL
Oval duct transition adapter STL 3D file 77x75 mm to 60x55 mm – transition: 50 mm
Oval adapter available as a STL 3D file. The internal cross-section on side A is 77x75 mm (nearly circular), while on side B it is 60x55 mm (oval). The useful sleeve length on side A is 50 mm, while on side B it reaches 100 mm. Between the two sleeves, the transition runs over 50 mm, resulting in an overall length of 200 mm. The wall is on the thicker side at 4 mm. The internal edges at the ends are chamfered to help guide the duct during insertion.
Parameter Value Unit
side A internal width 77 mm
side A internal height 75 mm
sleeve length on side A 50 mm
side B internal width 60 mm
side B internal height 55 mm
sleeve length on side B 100 mm
thickness 4 mm
transition length 50 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Oval hose adapter STL file 90.1x90 mm to 100x40 mm – transition: 100 mm (📦 #4332)

1 object(s) - format STL
Oval hose adapter STL file 90.1x90 mm to 100x40 mm – transition: 100 mm
STL 3D file for an oval adapter. Side A offers an internal cross-section of 90.1x90 mm (nearly circular) and side B 100x40 mm (oval). The useful sleeve length on side A is 50 mm, while on side B it reaches 20 mm. The transition section is 100 mm long, for a final overall length of 170 mm. The external chamfers improve fit when inserting the adapter into ducts or hoses.
Parameter Value Unit
side A internal width 90.1 mm
side A internal height 90 mm
sleeve length on side A 50 mm
side B internal width 100 mm
side B internal height 40 mm
sleeve length on side B 20 mm
thickness 3 mm
transition length 100 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Oval hose adapter STL file 190x165 mm to 135x35 mm – transition: 45 mm (📦 #9931)

1 object(s) - format STL
Oval hose adapter STL file 190x165 mm to 135x35 mm – transition: 45 mm
Oval connector available as a STL 3D file. On side A, the internal cross-section is 190x165 mm, whereas on side B it is 135x35 mm. The sleeves also differ in useful length: 30 mm on side A and 45 mm on side B. The transition links the two ends over 45 mm, with a total overall length of 120 mm. The shell is relatively thick, with a wall thickness of 5 mm. External chamfers are added at the ends to make it easier to insert the adapter into ducts or hoses.
Parameter Value Unit
side A internal width 190 mm
side A internal height 165 mm
sleeve length on side A 30 mm
side B internal width 135 mm
side B internal height 35 mm
sleeve length on side B 45 mm
thickness 5 mm
transition length 45 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Oval hose adapter STL 3D file 104x10 mm to 102x100 mm – transition: 50 mm (📦 #5359)

1 object(s) - format STL
Oval hose adapter STL 3D file 104x10 mm to 102x100 mm – transition: 50 mm
Oval hose adapter available as a STL 3D file. The internal cross-section on side A is 104x10 mm (oval), while on side B it is 102x100 mm (nearly circular). The sleeve on side A provides a useful length of 40 mm, and on side B 100 mm. Between the two sleeves, the transition runs over 50 mm, resulting in an overall length of 190 mm. Internal chamfers are added at the ends to make assembly and duct insertion easier.
Parameter Value Unit
side A internal width 104 mm
side A internal height 10 mm
sleeve length on side A 40 mm
side B internal width 102 mm
side B internal height 100 mm
sleeve length on side B 100 mm
thickness 2 mm
transition length 50 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Oval duct transition fitting STL file 106x52 mm to 72x71 mm – transition: 32 mm (📦 #7890)

1 object(s) - format STL
Oval duct transition fitting STL file 106x52 mm to 72x71 mm – transition: 32 mm
Oval coupling available as a STL 3D file. The internal cross-section on side A is 106x52 mm (oval), while on side B it is 72x71 mm (nearly circular). The sleeve on side A provides a useful length of 20 mm, and on side B 25 mm. The transition section is 32 mm long, for a final overall length of 77 mm. With 4 mm of wall thickness, the adapter gains extra strength. The ends are straight, with no chamfer at all.
Parameter Value Unit
side A internal width 106 mm
side A internal height 52 mm
sleeve length on side A 20 mm
side B internal width 72 mm
side B internal height 71 mm
sleeve length on side B 25 mm
thickness 4 mm
transition length 32 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none

Oval duct transition adapter STL file 43x35 mm to 58.1x58 mm – transition: 20 mm (📦 #5388)

1 object(s) - format STL
Oval duct transition adapter STL file 43x35 mm to 58.1x58 mm – transition: 20 mm
Oval coupling in STL 3D file format. Side A offers an internal cross-section of 43x35 mm (oval) and side B 58.1x58 mm (nearly circular). The useful lengths are 18 mm (A) and 25 mm (B), respectively. The transition section is 20 mm long, for a final overall length of 63 mm. The wall is on the thicker side at 4 mm. The internal chamfers help start the duct insertion more easily.
Parameter Value Unit
side A internal width 43 mm
side A internal height 35 mm
sleeve length on side A 18 mm
side B internal width 58.1 mm
side B internal height 58 mm
sleeve length on side B 25 mm
thickness 4 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Oval hose adapter STL file 102x74 mm to 72x71 mm – transition: 32 mm (📦 #7889)

1 object(s) - format STL
Oval hose adapter STL file 102x74 mm to 72x71 mm – transition: 32 mm
Oval connector available as a STL 3D file. On side A, the internal cross-section is 102x74 mm (oval), whereas on side B it is 72x71 mm (nearly circular). You get a sleeve of 20 mm on side A and 25 mm on side B. The transition section between the two ends is 32 mm long, for an overall length of 77 mm (sleeve A, transition and sleeve B). The shell is relatively thick, with a wall thickness of 4 mm. The ends are straight, with no chamfer at all.
Parameter Value Unit
side A internal width 102 mm
side A internal height 74 mm
sleeve length on side A 20 mm
side B internal width 72 mm
side B internal height 71 mm
sleeve length on side B 25 mm
thickness 4 mm
transition length 32 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none

Oval hose adapter STL 3D file 183x71 mm to 98.1x98 mm – transition: 30 mm (📦 #7199)

1 object(s) - format STL
Oval hose adapter STL 3D file 183x71 mm to 98.1x98 mm – transition: 30 mm
Oval duct coupling provided as a STL 3D file. On side A, the internal cross-section is 183x71 mm (oval), whereas on side B it is 98.1x98 mm (nearly circular). The useful sleeve length on side A is 10 mm, while on side B it reaches 50 mm. The transition links the two ends over 30 mm, with a total overall length of 90 mm. The internal edges at the ends are chamfered to help guide the duct during insertion.
Parameter Value Unit
side A internal width 183 mm
side A internal height 71 mm
sleeve length on side A 10 mm
side B internal width 98.1 mm
side B internal height 98 mm
sleeve length on side B 50 mm
thickness 2 mm
transition length 30 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Oval duct transition adapter STL 3D file 276.2x79.3 mm to 300x133.3 mm – transition: 20 mm (📦 #5213)

1 object(s) - format STL
Oval duct transition adapter STL 3D file 276.2x79.3 mm to 300x133.3 mm – transition: 20 mm
STL 3D file for an oval connector. On side A, the internal cross-section is 276.2x79.3 mm, whereas on side B it is 300x133.3 mm. You get a sleeve of 50 mm on side A and 5 mm on side B. The central transition occupies 20 mm, bringing the overall length to 75 mm. The wall is on the thicker side at 4 mm. Internal chamfers are added at the ends to make assembly and duct insertion easier.
Parameter Value Unit
side A internal width 276.2 mm
side A internal height 79.3 mm
sleeve length on side A 50 mm
side B internal width 300 mm
side B internal height 133.3 mm
sleeve length on side B 5 mm
thickness 4 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Oval hose adapter STL 3D file 106x52 mm to 72x71 mm – transition: 25 mm (📦 #7987)

1 object(s) - format STL
Oval hose adapter STL 3D file 106x52 mm to 72x71 mm – transition: 25 mm
Oval duct fitting in STL 3D file format. On side A, the internal cross-section is 106x52 mm (oval), whereas on side B it is 72x71 mm (nearly circular). The sleeve on side A provides a useful length of 15 mm, and on side B 20 mm. The transition section is 25 mm long, for a final overall length of 60 mm. Wall thickness is generous (4 mm). The ends are straight, with no chamfer at all.
Parameter Value Unit
side A internal width 106 mm
side A internal height 52 mm
sleeve length on side A 15 mm
side B internal width 72 mm
side B internal height 71 mm
sleeve length on side B 20 mm
thickness 4 mm
transition length 25 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none

Oval duct transition fitting STL file 105x35 mm to 105x34 mm – transition: 20 mm (📦 #8809)

1 object(s) - format STL
Oval duct transition fitting STL file 105x35 mm to 105x34 mm – transition: 20 mm
Oval hose adapter provided as a STL 3D file. On side A, the internal cross-section is 105x35 mm, whereas on side B it is 105x34 mm. The useful sleeve length is the same on both sides, 40 mm. The transition links the two ends over 20 mm, with a total overall length of 100 mm. Internal chamfers are added at the ends to make assembly and duct insertion easier.
Parameter Value Unit
side A internal width 105 mm
side A internal height 35 mm
sleeve length on side A 40 mm
side B internal width 105 mm
side B internal height 34 mm
sleeve length on side B 40 mm
thickness 3 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside

Oval duct transition adapter STL file 100x70 mm to 80x40 mm – transition: 20 mm (📦 #4452)

1 object(s) - format STL
Oval duct transition adapter STL file 100x70 mm to 80x40 mm – transition: 20 mm
Oval pipe adapter provided as a STL 3D file. The internal cross-section on side A is 100x70 mm, while on side B it is 80x40 mm. You get a sleeve of 5 mm on side A and 10 mm on side B. The transition section is 20 mm long, for a final overall length of 35 mm. The shell is relatively thick, with a wall thickness of 4 mm. External chamfers are added at the ends to make it easier to insert the adapter into ducts or hoses.
Parameter Value Unit
side A internal width 100 mm
side A internal height 70 mm
sleeve length on side A 5 mm
side B internal width 80 mm
side B internal height 40 mm
sleeve length on side B 10 mm
thickness 4 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Oval duct transition adapter STL 3D file 66x65.9 mm to 107x51.5 mm – transition: 20 mm (📦 #8831)

1 object(s) - format STL
Oval duct transition adapter STL 3D file 66x65.9 mm to 107x51.5 mm – transition: 20 mm
STL 3D file for an oval coupling. The internal cross-section on side A is 66x65.9 mm (nearly circular), while on side B it is 107x51.5 mm (oval). The sleeves on sides A and B have the same useful length of 80 mm. Between the two sleeves, the transition runs over 20 mm, resulting in an overall length of 180 mm. The wall is on the thicker side at 5 mm. The ends are straight, with no chamfer at all.
Parameter Value Unit
side A internal width 66 mm
side A internal height 65.9 mm
sleeve length on side A 80 mm
side B internal width 107 mm
side B internal height 51.5 mm
sleeve length on side B 80 mm
thickness 5 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none

Oval duct transition fitting STL file 106x78 mm to 82x81 mm – transition: 32 mm (📦 #5055)

1 object(s) - format STL
Oval duct transition fitting STL file 106x78 mm to 82x81 mm – transition: 32 mm
Oval duct coupling provided as a STL 3D file. Side A offers an internal cross-section of 106x78 mm (oval) and side B 82x81 mm (nearly circular). The sleeve on side A provides a useful length of 20 mm, and on side B 25 mm. The central transition occupies 32 mm, bringing the overall length to 77 mm. The ends are left without chamfers, with raw inner and outer edges.
Parameter Value Unit
side A internal width 106 mm
side A internal height 78 mm
sleeve length on side A 20 mm
side B internal width 82 mm
side B internal height 81 mm
sleeve length on side B 25 mm
thickness 3 mm
transition length 32 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none

Oval duct transition fitting STL file 100x80 mm to 80x40 mm – transition: 20 mm (📦 #4451)

1 object(s) - format STL
Oval duct transition fitting STL file 100x80 mm to 80x40 mm – transition: 20 mm
Oval pipe adapter provided as a STL 3D file. On side A, the internal cross-section is 100x80 mm, whereas on side B it is 80x40 mm. The sleeves also differ in useful length: 5 mm on side A and 10 mm on side B. Between the two sleeves, the transition runs over 20 mm, resulting in an overall length of 35 mm. With 4 mm of wall thickness, the adapter gains extra strength. External chamfers are added at the ends to make it easier to insert the adapter into ducts or hoses.
Parameter Value Unit
side A internal width 100 mm
side A internal height 80 mm
sleeve length on side A 5 mm
side B internal width 80 mm
side B internal height 40 mm
sleeve length on side B 10 mm
thickness 4 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Oval hose adapter STL 3D file 91x80 mm to 80x40 mm – transition: 20 mm (📦 #4450)

1 object(s) - format STL
Oval hose adapter STL 3D file 91x80 mm to 80x40 mm – transition: 20 mm
Oval connector available as a STL 3D file. The internal cross-section on side A is 91x80 mm, while on side B it is 80x40 mm. The useful sleeve length on side A is 5 mm, while on side B it reaches 10 mm. The transition section between the two ends is 20 mm long, for an overall length of 35 mm (sleeve A, transition and sleeve B). The shell is relatively thick, with a wall thickness of 4 mm. External chamfers are added at the ends to make it easier to insert the adapter into ducts or hoses.
Parameter Value Unit
side A internal width 91 mm
side A internal height 80 mm
sleeve length on side A 5 mm
side B internal width 80 mm
side B internal height 40 mm
sleeve length on side B 10 mm
thickness 4 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Oval duct transition adapter STL 3D file 160x37 mm to 45.1x45 mm – transition: 20 mm (📦 #5211)

1 object(s) - format STL
Oval duct transition adapter STL 3D file 160x37 mm to 45.1x45 mm – transition: 20 mm
STL 3D file for an oval duct adapter. The internal cross-section on side A is 160x37 mm (oval), while on side B it is 45.1x45 mm (nearly circular). The useful length is consistent on both ends: 20 mm. The transition links the two ends over 20 mm, with a total overall length of 60 mm. External chamfers at the ends help with engagement and assembly within the duct system. Side B is offset by 10 mm along the Y axis relative to side A.
Parameter Value Unit
side A internal width 160 mm
side A internal height 37 mm
sleeve length on side A 20 mm
side B internal width 45.1 mm
side B internal height 45 mm
sleeve length on side B 20 mm
thickness 3 mm
transition length 20 mm
Y offset 10 mm
Z offset 0 mm
end chamfers outside

Oval duct transition adapter STL file 80.1x80 mm to 80x40 mm – transition: 20 mm (📦 #4270)

1 object(s) - format STL
Oval duct transition adapter STL file 80.1x80 mm to 80x40 mm – transition: 20 mm
STL 3D file for an oval hose fitting. On side A, the internal cross-section is 80.1x80 mm (nearly circular), whereas on side B it is 80x40 mm (oval). The sleeve on side A provides a useful length of 5 mm, and on side B 10 mm. The transition section is 20 mm long, for a final overall length of 35 mm. The wall is on the thicker side at 4 mm. External chamfers at the ends help with engagement and assembly within the duct system.
Parameter Value Unit
side A internal width 80.1 mm
side A internal height 80 mm
sleeve length on side A 5 mm
side B internal width 80 mm
side B internal height 40 mm
sleeve length on side B 10 mm
thickness 4 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Oval duct transition fitting STL file 100.1x100 mm to 80x40 mm – transition: 20 mm (📦 #4342)

1 object(s) - format STL
Oval duct transition fitting STL file 100.1x100 mm to 80x40 mm – transition: 20 mm
STL 3D file for an oval duct adapter. On side A, the internal cross-section is 100.1x100 mm (nearly circular), whereas on side B it is 80x40 mm (oval). You get a sleeve of 5 mm on side A and 10 mm on side B. The transition section is 20 mm long, for a final overall length of 35 mm. Wall thickness is generous (4 mm). External chamfers are added at the ends to make it easier to insert the adapter into ducts or hoses.
Parameter Value Unit
side A internal width 100.1 mm
side A internal height 100 mm
sleeve length on side A 5 mm
side B internal width 80 mm
side B internal height 40 mm
sleeve length on side B 10 mm
thickness 4 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Oval duct transition adapter STL 3D file 52x39 mm to 47x46 mm – transition: 20 mm (📦 #6016)

1 object(s) - format STL
Oval duct transition adapter STL 3D file 52x39 mm to 47x46 mm – transition: 20 mm
Oval pipe adapter in STL 3D file format. The internal cross-section on side A is 52x39 mm (oval), while on side B it is 47x46 mm (nearly circular). The useful sleeve length is the same on both sides, 30 mm. The transition section is 20 mm long, for a final 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 52 mm
side A internal height 39 mm
sleeve length on side A 30 mm
side B internal width 47 mm
side B internal height 46 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

Oval duct transition adapter STL file 120x80 mm to 90x70 mm – transition: 30 mm (📦 #4220)

1 object(s) - format STL
Oval duct transition adapter STL file 120x80 mm to 90x70 mm – transition: 30 mm
Oval duct fitting in STL 3D file format. Side A offers an internal cross-section of 120x80 mm and side B 90x70 mm. The useful sleeve length is the same on both sides, 20 mm. The transition portion extends over 30 mm and the overall length, sleeves included, is 70 mm. The ends are left without chamfers, with raw inner and outer edges.
Parameter Value Unit
side A internal width 120 mm
side A internal height 80 mm
sleeve length on side A 20 mm
side B internal width 90 mm
side B internal height 70 mm
sleeve length on side B 20 mm
thickness 3 mm
transition length 30 mm
Y offset 0 mm
Z offset 0 mm
end chamfers none

Oval duct transition fitting STL file 120.1x120 mm to 80x40 mm – transition: 20 mm (📦 #4343)

1 object(s) - format STL
Oval duct transition fitting STL file 120.1x120 mm to 80x40 mm – transition: 20 mm
STL 3D file for an oval duct fitting. The internal cross-section on side A is 120.1x120 mm (nearly circular), while on side B it is 80x40 mm (oval). On side A, the sleeve is 5 mm long, and on side B 10 mm. The central transition occupies 20 mm, bringing the overall length to 35 mm. A thickness of 4 mm provides good stiffness. The external chamfers improve fit when inserting the adapter into ducts or hoses.
Parameter Value Unit
side A internal width 120.1 mm
side A internal height 120 mm
sleeve length on side A 5 mm
side B internal width 80 mm
side B internal height 40 mm
sleeve length on side B 10 mm
thickness 4 mm
transition length 20 mm
Y offset 0 mm
Z offset 0 mm
end chamfers outside

Oval duct transition fitting STL file 200.1x200 mm to 200x95 mm – transition: 100 mm (📦 #5259)

1 object(s) - format STL
Oval duct transition fitting STL file 200.1x200 mm to 200x95 mm – transition: 100 mm
Oval duct adapter available as a STL 3D file. The internal cross-section on side A is 200.1x200 mm (nearly circular), while on side B it is 200x95 mm (oval). Both sleeves share an identical useful length of 30 mm. The transition links the two ends over 100 mm, with a total overall length of 160 mm. Internal chamfers are added at the ends to make assembly and duct insertion easier.
Parameter Value Unit
side A internal width 200.1 mm
side A internal height 200 mm
sleeve length on side A 30 mm
side B internal width 200 mm
side B internal height 95 mm
sleeve length on side B 30 mm
thickness 3 mm
transition length 100 mm
Y offset 0 mm
Z offset 0 mm
end chamfers inside