Custom Round-to-Rectangular Tube Adapter STL file ⌀145 mm to 120×120 mm, thickness 2 mm 📦#3299

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3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀145 mm and a rectangular section with inner dimensions 120×120 mm. The shell thickness is 2 mm and the total length is 100 mm. A chamfer is applied on the inside of the rectangular end.
Generation date: 2025-11-15
3D Model Round-to-Rectangular Tube Adapter STL file ⌀145 mm to 120×120 mm, thickness 2 mm

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  • round-to-rectangular-adapter-d_model3299-nb0_dd{id}.stl : 1.7 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 145 mm (≃5.71 in)
#2 cylinder inlet length 50 mm (≃1.97 in)
#3 rectangle internal length 120 mm (≃4.72 in)
#4 rectangle internal height 120 mm (≃4.72 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 100 mm (≃3 15/16 in)
#9 thickness 2 mm (≃0.08 in)
#10 chamfer chamfer on the inside
of the rectangular tube
Metadata Value
Cylinder internal diameter 141 mm (≃5 9/16 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 

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Parameter Value Unit
cylinder outer diameter 101.6 mm
cylinder inlet length 50 mm
rectangle internal length 101.6 mm
rectangle internal height 101.6 mm
rectangle inlet length 5 mm
offset Z 0 mm
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Parameter Value Unit
cylinder outer diameter 151 mm
cylinder inlet length 20 mm
rectangle internal length 150 mm
rectangle internal height 150 mm
rectangle inlet length 10 mm
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thickness 2 mm
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Parameter Value Unit
cylinder outer diameter 150 mm
cylinder inlet length 50 mm
rectangle internal length 198 mm
rectangle internal height 98 mm
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Download this file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀99.5 mm and a rectangular section with inner dimensions 170×100 mm. The wall thickness is 2 mm and the overall length is 120 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 99.5 mm
cylinder inlet length 30 mm
rectangle internal length 170 mm
rectangle internal height 100 mm
rectangle inlet length 30 mm
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total length 120 mm
thickness 2 mm
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Parameter Value Unit
cylinder outer diameter 151 mm
cylinder inlet length 20 mm
rectangle internal length 150 mm
rectangle internal height 150 mm
rectangle inlet length 10 mm
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thickness 2 mm
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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 120×120 mm. The wall thickness is 2 mm and the overall length is 60 mm. A chamfer is applied on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 20 mm
rectangle internal length 120 mm
rectangle internal height 120 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 60 mm
thickness 2 mm
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Parameter Value Unit
cylinder outer diameter 148 mm
cylinder inlet length 35 mm
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rectangle internal height 159 mm
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Parameter Value Unit
cylinder outer diameter 101.6 mm
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rectangle internal length 110 mm
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Parameter Value Unit
cylinder outer diameter 120 mm
cylinder inlet length 40 mm
rectangle internal length 100 mm
rectangle internal height 100 mm
rectangle inlet length 40 mm
offset Z 0 mm
offset Y 0 mm
total length 120 mm
thickness 2 mm
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Parameter Value Unit
cylinder outer diameter 95 mm
cylinder inlet length 50 mm
rectangle internal length 110 mm
rectangle internal height 110 mm
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Parameter Value Unit
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Parameter Value Unit
cylinder outer diameter 102 mm
cylinder inlet length 50 mm
rectangle internal length 150 mm
rectangle internal height 150 mm
rectangle inlet length 5 mm
offset Z 0 mm
offset Y 0 mm
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thickness 2 mm
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Parameter Value Unit
cylinder outer diameter 105 mm
cylinder inlet length 50 mm
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rectangle internal height 80 mm
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thickness 2 mm
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Parameter Value Unit
cylinder outer diameter 95 mm
cylinder inlet length 50 mm
rectangle internal length 116 mm
rectangle internal height 144.5 mm
rectangle inlet length 5 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
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Parameter Value Unit
cylinder outer diameter 95 mm
cylinder inlet length 20 mm
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rectangle internal height 121 mm
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thickness 2 mm
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Parameter Value Unit
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cylinder inlet length 30 mm
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Parameter Value Unit
cylinder outer diameter 95 mm
cylinder inlet length 50 mm
rectangle internal length 120 mm
rectangle internal height 148.5 mm
rectangle inlet length 5 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 2 mm
chamfer no chamfer
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Parameter Value Unit
cylinder outer diameter 95 mm
cylinder inlet length 20 mm
rectangle internal length 126 mm
rectangle internal height 121 mm
rectangle inlet length 20 mm
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offset Y 0 mm
total length 80 mm
thickness 2 mm
chamfer chamfer on t...
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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...
3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀100 mm and a rectangular section with internal dimensions 135×100 mm. The shell thickness is 2 mm and the overall length is 60 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 20 mm
rectangle internal length 135 mm
rectangle internal height 100 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 60 mm
thickness 2 mm
chamfer chamfer on t...
Download this file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀120 mm and a rectangular section with internal dimensions 196×100 mm. The shell thickness is 2 mm and the overall length is 125 mm. The adapter has an offset of 3 mm along the Y axis and 3 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 120 mm
cylinder inlet length 40 mm
rectangle internal length 196 mm
rectangle internal height 100 mm
rectangle inlet length 12 mm
offset Z 3 mm
offset Y 3 mm
total length 125 mm
thickness 2 mm
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Parameter Value Unit
cylinder outer diameter 148 mm
cylinder inlet length 25 mm
rectangle internal length 145.0 mm
rectangle internal height 70 mm
rectangle inlet length 25 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 3 mm
chamfer chamfers on ...
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Parameter Value Unit
cylinder outer diameter 120 mm
cylinder inlet length 40 mm
rectangle internal length 205 mm
rectangle internal height 100 mm
rectangle inlet length 12 mm
offset Z 3 mm
offset Y 2 mm
total length 125 mm
thickness 2 mm
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Parameter Value Unit
cylinder outer diameter 76 mm
cylinder inlet length 32 mm
rectangle internal length 120 mm
rectangle internal height 50 mm
rectangle inlet length 30 mm
offset Z 0 mm
offset Y 0 mm
total length 90 mm
thickness 2 mm
chamfer chamfer on t...
3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀150 mm and a rectangular section with internal dimensions 120×120 mm. The wall thickness is 2 mm and the overall length is 100 mm.
Parameter Value Unit
cylinder outer diameter 150 mm
cylinder inlet length 20 mm
rectangle internal length 120 mm
rectangle internal height 120 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 2 mm
chamfer no chamfer
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 ...
Download this model in STL format of a round-to-rectangular adapter with an external diameter of ⌀149.6 mm and a rectangular section with inner dimensions 120×150 mm. The wall thickness is 3 mm and the overall length is 200 mm. A chamfer is present on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 149.6 mm
cylinder inlet length 35 mm
rectangle internal length 120 mm
rectangle internal height 150 mm
rectangle inlet length 30 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
chamfer chamfer on t...