Custom Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 250×270 mm, thickness 5 mm 📦#9812

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Download this 3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀100 mm and a rectangular section with internal dimensions 250×270 mm. The wall thickness is 5 mm and the total length is 120 mm.
Generation date: 2026-07-03
3D Model Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 250×270 mm, thickness 5 mm

3D model download

Free
  • round-to-rectangular-adapter-d_model9812-nb0_dd{id}.stl : 3.2 Mo
STL Mesh quality : Linear deflection 0.0005 Angular deflection 0.05
No compliance warranty No compliance warranty
(Internal and private use, non-commercial – no distribution – no derivatives)
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Values for this model

This model was generated by the Round to rectangular adapter template, with the following values:
Parameter Value
#1 cylinder outer diameter 100 mm (≃3 15/16 in)
#2 cylinder inlet length 20 mm (≃0.79 in)
#3 rectangle internal length 250 mm (≃9.84 in)
#4 rectangle internal height 270 mm (≃10 5/8 in)
#5 rectangle inlet length 20 mm (≃0.79 in)
#6 offset Z 0 mm (0 in)
#7 offset Y 0 mm (0 in)
#8 total length 120 mm (≃4.72 in)
#9 thickness 5 mm (≃3/16 in)
#10 chamfer no chamfer
Metadata Value
Cylinder internal diameter 90 mm (≃3.54 in)
illustration of the parameters
Parameter overview

  • If the chamfer option on the ends is enabled, the chamfer length is equal to half the thickness.
  • The stop at the bottom of the rectangular section has a width equal to half the thickness.

Labels are used in the naming of the downloaded 3D files.

Parameter Label
#1 cylinder outer diameter diaC
#2 cylinder inlet length lentC
#3 rectangle internal length lenIR
#4 rectangle internal height heiIR
#5 rectangle inlet length lentR
#6 offset Z ofsZ
#7 offset Y ofsY
#8 total length lenT
#9 thickness thi
#10 chamfer cha

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To search for a model based on your own parameters, go to the template page Round to rectangular adapter 

Round-to-Rectangular Tube Adapter STL 3D file ⌀98 mm to 240×270 mm, thickness 5 mm (📦 #9843)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀98 mm to 240×270 mm, thickness 5 mm
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Parameter Value Unit
cylinder outer diameter 98 mm
cylinder inlet length 10 mm
rectangle internal length 240 mm
rectangle internal height 270 mm
rectangle inlet length 5 mm
offset Z 0 mm
offset Y 0 mm
total length 70 mm
thickness 5 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 240×120 mm, thickness 5 mm (📦 #4087)

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Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 20 mm
rectangle internal length 240 mm
rectangle internal height 120 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 5 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 240×120 mm, thickness 5 mm (📦 #4158)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 240×120 mm, thickness 5 mm
Download this model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀100 mm and a rectangular section with inner dimensions 240×120 mm. The wall thickness is 5 mm and the total length is 100 mm. A chamfer is present on the outside of the cylindrical end.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 20 mm
rectangle internal length 240 mm
rectangle internal height 120 mm
rectangle inlet length 27 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 5 mm
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Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 240×120 mm, thickness 5 mm (📦 #4084)

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Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 240×120 mm, thickness 5 mm
Download this 3D model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀100 mm and a rectangular section with inner dimensions 240×120 mm. The shell thickness is 5 mm and the total length is 80 mm. A chamfer is applied on the outside of the cylindrical end.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 20 mm
rectangle internal length 240 mm
rectangle internal height 120 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 80 mm
thickness 5 mm
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Round-to-Rectangular Tube Adapter STL file ⌀122 mm to 240×270 mm, thickness 3 mm (📦 #9869)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀122 mm to 240×270 mm, thickness 3 mm
Download this 3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀122 mm and a rectangular section with internal dimensions 240×270 mm. The wall thickness is 3 mm and the overall length is 60 mm. A chamfer is applied on the outside of the cylindrical end.
Parameter Value Unit
cylinder outer diameter 122 mm
cylinder inlet length 10 mm
rectangle internal length 240 mm
rectangle internal height 270 mm
rectangle inlet length 5 mm
offset Z 0 mm
offset Y 0 mm
total length 60 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 145.5×147.5 mm, thickness 5 mm (📦 #6185)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 145.5×147.5 mm, thickness 5 mm
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Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 40 mm
rectangle internal length 145.5 mm
rectangle internal height 147.5 mm
rectangle inlet length 5 mm
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offset Y 0 mm
total length 65 mm
thickness 5 mm
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Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 280×140 mm, thickness 5 mm (📦 #9226)

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Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 50 mm
rectangle internal length 280 mm
rectangle internal height 140 mm
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Round-to-Rectangular Tube Adapter STL file ⌀123 mm to 240×270 mm, thickness 3 mm (📦 #9868)

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Parameter Value Unit
cylinder outer diameter 123 mm
cylinder inlet length 10 mm
rectangle internal length 240 mm
rectangle internal height 270 mm
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Round-to-Rectangular Tube Adapter STL file ⌀120 mm to 190×190 mm, thickness 5 mm (📦 #4385)

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Parameter Value Unit
cylinder outer diameter 120 mm
cylinder inlet length 15 mm
rectangle internal length 190 mm
rectangle internal height 190 mm
rectangle inlet length 20 mm
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offset Y 0 mm
total length 70 mm
thickness 5 mm
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Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 135.5×137.5 mm, thickness 5 mm (📦 #6184)

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Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 10 mm
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rectangle internal height 137.5 mm
rectangle inlet length 10 mm
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Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 138×139 mm, thickness 5 mm (📦 #6192)

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Parameter Value Unit
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Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 40 mm
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rectangle internal height 137.5 mm
rectangle inlet length 5 mm
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offset Y 0 mm
total length 65 mm
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Round-to-Rectangular Tube Adapter STL file ⌀120 mm to 90×140 mm, thickness 5 mm (📦 #9157)

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Round-to-Rectangular Tube Adapter STL file ⌀120 mm to 90×140 mm, thickness 5 mm
Model in STL format of a round-to-rectangular adapter with an external diameter of ⌀120 mm and a rectangular section with internal dimensions 90×140 mm. The wall thickness is 5 mm and the overall length is 95 mm.
Parameter Value Unit
cylinder outer diameter 120 mm
cylinder inlet length 20 mm
rectangle internal length 90 mm
rectangle internal height 140 mm
rectangle inlet length 10 mm
offset Z 0 mm
offset Y 0 mm
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thickness 5 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 138×139 mm, thickness 5 mm (📦 #6193)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 138×139 mm, thickness 5 mm
File in STL format of a round-to-rectangular adapter with an external diameter of ⌀100 mm and a rectangular section with internal dimensions 138×139 mm. The shell thickness is 5 mm and the total length is 200 mm.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 40 mm
rectangle internal length 138 mm
rectangle internal height 139 mm
rectangle inlet length 5 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 5 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 128×129 mm, thickness 5 mm (📦 #6189)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 128×129 mm, thickness 5 mm
Model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀100 mm and a rectangular section with inner dimensions 128×129 mm. The wall thickness is 5 mm and the overall length is 60 mm.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 5 mm
rectangle internal length 128 mm
rectangle internal height 129 mm
rectangle inlet length 5 mm
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offset Y 0 mm
total length 60 mm
thickness 5 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 125.5×127.5 mm, thickness 5 mm (📦 #6187)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 125.5×127.5 mm, thickness 5 mm
File in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀100 mm and a rectangular section with inner dimensions 125.5×127.5 mm. The shell thickness is 5 mm and the total length is 100 mm.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 40 mm
rectangle internal length 125.5 mm
rectangle internal height 127.5 mm
rectangle inlet length 40 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 5 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 125.5×127.5 mm, thickness 5 mm (📦 #6188)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 125.5×127.5 mm, thickness 5 mm
Download this file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀100 mm and a rectangular section with internal dimensions 125.5×127.5 mm. The shell thickness is 5 mm and the total length is 60 mm.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 5 mm
rectangle internal length 125.5 mm
rectangle internal height 127.5 mm
rectangle inlet length 5 mm
offset Z 0 mm
offset Y 0 mm
total length 60 mm
thickness 5 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀110 mm to 220×220 mm, thickness 3 mm + offset (📦 #1648)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀110 mm to 220×220 mm, thickness 3 mm + offset
3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀110 mm and a rectangular section with internal dimensions 220×220 mm. The shell thickness is 3 mm and the total length is 120 mm. The adapter has an offset of 20 mm along the Z axis. A chamfer is present on the outside of the cylindrical end.
Parameter Value Unit
cylinder outer diameter 110 mm
cylinder inlet length 30 mm
rectangle internal length 220 mm
rectangle internal height 220 mm
rectangle inlet length 50 mm
offset Z 20 mm
offset Y 0 mm
total length 120 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀50 mm to 149.5×145 mm, thickness 4 mm (📦 #6247)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀50 mm to 149.5×145 mm, thickness 4 mm
3D file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀50 mm and a rectangular section with internal dimensions 149.5×145 mm. The wall thickness is 4 mm and the overall length is 50 mm.
Parameter Value Unit
cylinder outer diameter 50 mm
cylinder inlet length 5 mm
rectangle internal length 149.5 mm
rectangle internal height 145 mm
rectangle inlet length 5 mm
offset Z 0 mm
offset Y 0 mm
total length 50 mm
thickness 4 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀65 mm to 203×203 mm, thickness 3 mm (📦 #9075)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀65 mm to 203×203 mm, thickness 3 mm
File in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀65 mm and a rectangular section with internal dimensions 203×203 mm. The wall thickness is 3 mm and the overall length is 220 mm.
Parameter Value Unit
cylinder outer diameter 65 mm
cylinder inlet length 35 mm
rectangle internal length 203 mm
rectangle internal height 203 mm
rectangle inlet length 35 mm
offset Z 0 mm
offset Y 0 mm
total length 220 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀180 mm to 200×200 mm, thickness 3 mm (📦 #7409)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀180 mm to 200×200 mm, thickness 3 mm
Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀180 mm and a rectangular section with internal dimensions 200×200 mm. The shell thickness is 3 mm and the overall length is 85 mm.
Parameter Value Unit
cylinder outer diameter 180 mm
cylinder inlet length 15 mm
rectangle internal length 200 mm
rectangle internal height 200 mm
rectangle inlet length 40 mm
offset Z 0 mm
offset Y 0 mm
total length 85 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 130×100 mm, thickness 5 mm (📦 #3918)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 130×100 mm, thickness 5 mm
File in STL format of a round-to-rectangular adapter with an outer diameter of ⌀100 mm and a rectangular section with internal dimensions 130×100 mm. The shell thickness is 5 mm and the total length is 80 mm. A chamfer is present on the outside of the cylindrical end.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 20 mm
rectangle internal length 130 mm
rectangle internal height 100 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 80 mm
thickness 5 mm
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Round-to-Rectangular Tube Adapter STL file ⌀158 mm to 210×180 mm, thickness 4 mm (📦 #2531)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀158 mm to 210×180 mm, thickness 4 mm
3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀158 mm and a rectangular section with internal dimensions 210×180 mm. The shell thickness is 4 mm and the overall length is 83 mm. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 158 mm
cylinder inlet length 35 mm
rectangle internal length 210 mm
rectangle internal height 180 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 83 mm
thickness 4 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 230×150 mm, thickness 3 mm (📦 #9717)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 230×150 mm, thickness 3 mm
Download this model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀150 mm and a rectangular section with inner dimensions 230×150 mm. The wall thickness is 3 mm and the total length is 150 mm.
Parameter Value Unit
cylinder outer diameter 150 mm
cylinder inlet length 40 mm
rectangle internal length 230 mm
rectangle internal height 150 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 150 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀160 mm to 70×189 mm, thickness 5 mm + offset (📦 #9095)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀160 mm to 70×189 mm, thickness 5 mm + offset
3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀160 mm and a rectangular section with inner dimensions 70×189 mm. The shell thickness is 5 mm and the total length is 130 mm. The adapter has an offset of 5 mm along the Y axis and 5 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 160 mm
cylinder inlet length 50 mm
rectangle internal length 70 mm
rectangle internal height 189 mm
rectangle inlet length 50 mm
offset Z 5 mm
offset Y 5 mm
total length 130 mm
thickness 5 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 70×189 mm, thickness 5 mm + offset (📦 #9096)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 70×189 mm, thickness 5 mm + offset
3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀150 mm and a rectangular section with inner dimensions 70×189 mm. The shell thickness is 5 mm and the overall length is 150 mm. The adapter has an offset of 5 mm along the Y axis.
Parameter Value Unit
cylinder outer diameter 150 mm
cylinder inlet length 50 mm
rectangle internal length 70 mm
rectangle internal height 189 mm
rectangle inlet length 55 mm
offset Z 0 mm
offset Y 5 mm
total length 150 mm
thickness 5 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 240×270 mm, thickness 2 mm (📦 #9821)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 240×270 mm, thickness 2 mm
Download this 3D file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀100 mm and a rectangular section with internal dimensions 240×270 mm. The wall thickness is 2 mm and the overall length is 120 mm.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 20 mm
rectangle internal length 240 mm
rectangle internal height 270 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 120 mm
thickness 2 mm
chamfer no chamfer