Custom Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 200×20 mm, thickness 2 mm 📦#3726

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File in STL format of a round-to-rectangular adapter with an external diameter of ⌀100 mm and a rectangular section with inner dimensions 200×20 mm. The shell thickness is 2 mm and the total length is 300 mm. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Generation date: 2025-11-26
3D Model Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 200×20 mm, thickness 2 mm

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  • round-to-rectangular-adapter-d_model3726-nb0_dd{id}.stl : 1.2 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 100 mm (≃3 15/16 in)
#3 rectangle internal length 200 mm (≃7 7/8 in)
#4 rectangle internal height 20 mm (≃0.79 in)
#5 rectangle inlet length 10 mm (≃0.39 in)
#6 offset Z 0 mm (0 in)
#7 offset Y 0 mm (0 in)
#8 total length 300 mm (≃11 13/16 in)
#9 thickness 2 mm (≃0.08 in)
#10 chamfer chamfers on the outside
of the cylindrical tube
and on the inside of
the rectangular tube
Metadata Value
Cylinder internal diameter 96 mm (≃3.78 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 

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 200×40 mm. The shell thickness is 3 mm and the total length is 250 mm.
Parameter Value Unit
cylinder outer diameter 50 mm
cylinder inlet length 100 mm
rectangle internal length 200 mm
rectangle internal height 40 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 250 mm
thickness 3 mm
chamfer no chamfer
3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀112 mm and a rectangular section with internal dimensions 290×80 mm. The wall thickness is 3 mm and the overall length is 300 mm. A chamfer is applied on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 112 mm
cylinder inlet length 70 mm
rectangle internal length 290 mm
rectangle internal height 80 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 300 mm
thickness 3 mm
chamfer chamfer on t...
File in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀150 mm and a rectangular section with internal dimensions 198×98 mm. The shell thickness is 2 mm and the overall length is 152 mm. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 150 mm
cylinder inlet length 75 mm
rectangle internal length 198 mm
rectangle internal height 98 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 152 mm
thickness 2 mm
chamfer chamfers on ...
Model in STL format of a round-to-rectangular adapter with an external diameter of ⌀154 mm and a rectangular section with internal dimensions 214×44 mm. The wall thickness is 2 mm and the overall length is 300 mm.
Parameter Value Unit
cylinder outer diameter 154 mm
cylinder inlet length 50 mm
rectangle internal length 214 mm
rectangle internal height 44 mm
rectangle inlet length 18 mm
offset Z 0 mm
offset Y 0 mm
total length 300 mm
thickness 2 mm
chamfer no chamfer
3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀60 mm and a rectangular section with inner dimensions 32×40 mm. The shell thickness is 2 mm and the overall length is 130 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 60 mm
cylinder inlet length 80 mm
rectangle internal length 32 mm
rectangle internal height 40 mm
rectangle inlet length 25 mm
offset Z 0 mm
offset Y 0 mm
total length 130 mm
thickness 2 mm
chamfer chamfers on ...
3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀102 mm and a rectangular section with inner dimensions 290×80 mm. The wall thickness is 3 mm and the overall length is 160 mm. A chamfer is present on the outside of the cylindrical end.
Parameter Value Unit
cylinder outer diameter 102 mm
cylinder inlet length 70 mm
rectangle internal length 290 mm
rectangle internal height 80 mm
rectangle inlet length 30 mm
offset Z 0 mm
offset Y 0 mm
total length 160 mm
thickness 3 mm
chamfer chamfer on t...
Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀180 mm and a rectangular section with inner dimensions 180×50 mm. The wall thickness is 3 mm and the overall length is 250 mm.
Parameter Value Unit
cylinder outer diameter 180 mm
cylinder inlet length 80 mm
rectangle internal length 180 mm
rectangle internal height 50 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 250 mm
thickness 3 mm
chamfer no chamfer
File in STL format of a round-to-rectangular adapter with an external diameter of ⌀100 mm and a rectangular section with inner dimensions 150×50 mm. The wall thickness is 2 mm and the overall length is 150 mm. A chamfer is applied on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 50 mm
rectangle internal length 150 mm
rectangle internal height 50 mm
rectangle inlet length 40 mm
offset Z 0 mm
offset Y 0 mm
total length 150 mm
thickness 2 mm
chamfer chamfer on t...
Download this model in STL format of a round-to-rectangular adapter with an external diameter of ⌀110 mm and a rectangular section with inner dimensions 170×120 mm. The shell thickness is 3 mm and the total length is 280 mm. A chamfer is applied on the outside of the cylindrical end.
Parameter Value Unit
cylinder outer diameter 110 mm
cylinder inlet length 70 mm
rectangle internal length 170 mm
rectangle internal height 120 mm
rectangle inlet length 70 mm
offset Z 0 mm
offset Y 0 mm
total length 280 mm
thickness 3 mm
chamfer chamfer on t...
3D file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀76 mm and a rectangular section with inner dimensions 180×30 mm. The shell thickness is 3 mm and the overall length is 260 mm. The adapter has an offset of 5 mm along the Z axis. 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 76 mm
cylinder inlet length 80 mm
rectangle internal length 180 mm
rectangle internal height 30 mm
rectangle inlet length 100 mm
offset Z 5 mm
offset Y 0 mm
total length 260 mm
thickness 3 mm
chamfer chamfers on ...
Download this 3D file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀60 mm and a rectangular section with internal dimensions 100×50 mm. The shell thickness is 2 mm and the overall length is 150 mm. The adapter has an offset of 15 mm along the Z axis. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 60 mm
cylinder inlet length 50 mm
rectangle internal length 100 mm
rectangle internal height 50 mm
rectangle inlet length 46 mm
offset Z 15 mm
offset Y 0 mm
total length 150 mm
thickness 2 mm
chamfer chamfers on ...
3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀105 mm and a rectangular section with internal dimensions 80×80 mm. The shell thickness is 2 mm and the overall length is 150 mm. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 105 mm
cylinder inlet length 50 mm
rectangle internal length 80 mm
rectangle internal height 80 mm
rectangle inlet length 51 mm
offset Z 0 mm
offset Y 0 mm
total length 150 mm
thickness 2 mm
chamfer chamfers on ...
3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀32 mm and a rectangular section with inner dimensions 25×6 mm. The wall thickness is 2 mm and the total length is 280 mm. A chamfer is present on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 32 mm
cylinder inlet length 60 mm
rectangle internal length 25 mm
rectangle internal height 6 mm
rectangle inlet length 60 mm
offset Z 0 mm
offset Y 0 mm
total length 280 mm
thickness 2 mm
chamfer chamfer on t...
Download this 3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀99.5 mm and a rectangular section with internal dimensions 170×100 mm. The shell thickness is 2 mm and the total length is 180 mm. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 99.5 mm
cylinder inlet length 30 mm
rectangle internal length 170 mm
rectangle internal height 100 mm
rectangle inlet length 30 mm
offset Z 0 mm
offset Y 0 mm
total length 180 mm
thickness 2 mm
chamfer chamfers on ...
3D file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀75 mm and a rectangular section with internal dimensions 120×25 mm. The shell thickness is 3 mm and the total length is 150 mm. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 75 mm
cylinder inlet length 50 mm
rectangle internal length 120 mm
rectangle internal height 25 mm
rectangle inlet length 60 mm
offset Z 0 mm
offset Y 0 mm
total length 150 mm
thickness 3 mm
chamfer chamfers on ...
Download this file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀150 mm and a rectangular section with internal dimensions 198×98 mm. The shell thickness is 2 mm and the overall length is 127 mm. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 150 mm
cylinder inlet length 50 mm
rectangle internal length 198 mm
rectangle internal height 98 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 127 mm
thickness 2 mm
chamfer chamfers on ...
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Parameter Value Unit
cylinder outer diameter 158 mm
cylinder inlet length 40 mm
rectangle internal length 210 mm
rectangle internal height 35 mm
rectangle inlet length 15 mm
offset Z 0 mm
offset Y 0 mm
total length 220 mm
thickness 4 mm
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Download this model in STL format of a round-to-rectangular adapter with an external diameter of ⌀101.5 mm and a rectangular section with internal dimensions 203×12.5 mm. The wall thickness is 3 mm and the overall length is 180 mm. The adapter has an offset of 15 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 101.5 mm
cylinder inlet length 75 mm
rectangle internal length 203 mm
rectangle internal height 12.5 mm
rectangle inlet length 75 mm
offset Z 15 mm
offset Y 0 mm
total length 180 mm
thickness 3 mm
chamfer no chamfer
Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀25 mm and a rectangular section with internal dimensions 40×40 mm. The wall thickness is 3 mm and the total length is 200 mm.
Parameter Value Unit
cylinder outer diameter 25 mm
cylinder inlet length 100 mm
rectangle internal length 40 mm
rectangle internal height 40 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
chamfer no chamfer
Download this 3D model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀75 mm and a rectangular section with inner dimensions 125×22 mm. The shell thickness is 3 mm and the overall length is 125 mm. The adapter has an offset of 12.5 mm along the Z axis. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 75 mm
cylinder inlet length 50 mm
rectangle internal length 125 mm
rectangle internal height 22 mm
rectangle inlet length 50 mm
offset Z 12.5 mm
offset Y 0 mm
total length 125 mm
thickness 3 mm
chamfer chamfers on ...
Download this file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀101.5 mm and a rectangular section with inner dimensions 178×12.5 mm. The wall thickness is 3 mm and the total length is 178 mm. The adapter has an offset of 14 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 101.5 mm
cylinder inlet length 75 mm
rectangle internal length 178 mm
rectangle internal height 12.5 mm
rectangle inlet length 75 mm
offset Z 14 mm
offset Y 0 mm
total length 178 mm
thickness 3 mm
chamfer no chamfer
3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀67 mm and a rectangular section with inner dimensions 113×72 mm. The shell thickness is 3 mm and the total length is 147.2 mm. The adapter has an offset of 2 mm along the Y axis and 2 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 67 mm
cylinder inlet length 76 mm
rectangle internal length 113 mm
rectangle internal height 72 mm
rectangle inlet length 51 mm
offset Z 2 mm
offset Y 2 mm
total length 147.2 mm
thickness 3 mm
chamfer no chamfer
3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀115 mm and a rectangular section with inner dimensions 196×20 mm. The shell thickness is 2 mm and the overall length is 200 mm.
Parameter Value Unit
cylinder outer diameter 115 mm
cylinder inlet length 40 mm
rectangle internal length 196 mm
rectangle internal height 20 mm
rectangle inlet length 53 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 2 mm
chamfer no chamfer
3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀42 mm and a rectangular section with inner dimensions 120×80 mm. The wall thickness is 2 mm and the overall length is 150 mm. The adapter has an offset of 25 mm along the Z axis. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 42 mm
cylinder inlet length 50 mm
rectangle internal length 120 mm
rectangle internal height 80 mm
rectangle inlet length 50 mm
offset Z 25 mm
offset Y 0 mm
total length 150 mm
thickness 2 mm
chamfer chamfers on ...
3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀50 mm and a rectangular section with inner dimensions 120×126 mm. The wall thickness is 3 mm and the total length is 170 mm.
Parameter Value Unit
cylinder outer diameter 50 mm
cylinder inlet length 100 mm
rectangle internal length 120 mm
rectangle internal height 126 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 170 mm
thickness 3 mm
chamfer no chamfer
Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀76.2 mm and a rectangular section with internal dimensions 300×50.8 mm. The wall thickness is 4 mm and the overall length is 166 mm. A chamfer is present on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 76.2 mm
cylinder inlet length 76 mm
rectangle internal length 300 mm
rectangle internal height 50.8 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 166 mm
thickness 4 mm
chamfer chamfer on t...
Download this 3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀99 mm and a rectangular section with inner dimensions 300×50 mm. The shell thickness is 2 mm and the total length is 200 mm. The adapter has an offset of 45 mm along the Z axis. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 99 mm
cylinder inlet length 50 mm
rectangle internal length 300 mm
rectangle internal height 50 mm
rectangle inlet length 60 mm
offset Z 45 mm
offset Y 0 mm
total length 200 mm
thickness 2 mm
chamfer chamfers on ...