Custom Round-to-Rectangular Tube Adapter STL file ⌀147 mm to 250×250 mm, thickness 3 mm + offset 📦#9755

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Model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀147 mm and a rectangular section with internal dimensions 250×250 mm. The shell thickness is 3 mm and the total length is 200 mm. The adapter has an offset of 50 mm along the Z axis. A chamfer is applied on the outside of the cylindrical end.
Generation date: 2026-07-01
3D Model Round-to-Rectangular Tube Adapter STL file ⌀147 mm to 250×250 mm, thickness 3 mm + offset

3D model download

Free
  • round-to-rectangular-adapter-d_model9755-nb0_dd{id}.stl : 2.3 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 147 mm (≃5.79 in)
#2 cylinder inlet length 40 mm (≃1 9/16 in)
#3 rectangle internal length 250 mm (≃9.84 in)
#4 rectangle internal height 250 mm (≃9.84 in)
#5 rectangle inlet length 50 mm (≃1.97 in)
#6 offset Z 50 mm (≃1.97 in)
#7 offset Y 0 mm (0 in)
#8 total length 200 mm (≃7 7/8 in)
#9 thickness 3 mm (≃1/8 in)
#10 chamfer chamfer on the outside
of the cylindrical 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 

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

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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
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Round-to-Rectangular Tube Adapter STL 3D file ⌀108 mm to 154×240 mm, thickness 3 mm + offset (📦 #4102)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀108 mm to 154×240 mm, thickness 3 mm + offset
Download this 3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀108 mm and a rectangular section with internal dimensions 154×240 mm. The shell thickness is 3 mm and the overall length is 240 mm. The adapter has an offset of 70 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 108 mm
cylinder inlet length 30 mm
rectangle internal length 154 mm
rectangle internal height 240 mm
rectangle inlet length 50 mm
offset Z 70 mm
offset Y 0 mm
total length 240 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀108 mm to 154×240 mm, thickness 3 mm + offset (📦 #4101)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀108 mm to 154×240 mm, thickness 3 mm + offset
Download this model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀108 mm and a rectangular section with inner dimensions 154×240 mm. The wall thickness is 3 mm and the total length is 240 mm. The adapter has an offset of 70 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 108 mm
cylinder inlet length 20 mm
rectangle internal length 154 mm
rectangle internal height 240 mm
rectangle inlet length 50 mm
offset Z 70 mm
offset Y 0 mm
total length 240 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀108 mm to 154×240 mm, thickness 3 mm + offset (📦 #4100)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀108 mm to 154×240 mm, thickness 3 mm + offset
Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀108 mm and a rectangular section with inner dimensions 154×240 mm. The shell thickness is 3 mm and the total length is 240 mm. The adapter has an offset of 70 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 108 mm
cylinder inlet length 20 mm
rectangle internal length 154 mm
rectangle internal height 240 mm
rectangle inlet length 30 mm
offset Z 70 mm
offset Y 0 mm
total length 240 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀110 mm to 220×220 mm, thickness 3 mm + offset (📦 #1649)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀110 mm to 220×220 mm, thickness 3 mm + offset
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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
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thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀80 mm to 154×220 mm, thickness 3 mm + offset (📦 #4558)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀80 mm to 154×220 mm, thickness 3 mm + offset
Download this 3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀80 mm and a rectangular section with inner dimensions 154×220 mm. The wall thickness is 3 mm and the overall length is 240 mm. The adapter has an offset of 70 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 80 mm
cylinder inlet length 20 mm
rectangle internal length 154 mm
rectangle internal height 220 mm
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Round-to-Rectangular Tube Adapter STL file ⌀114.3 mm to 200.5×170.5 mm, thickness 3 mm + offset (📦 #2185)

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Parameter Value Unit
cylinder outer diameter 114.3 mm
cylinder inlet length 50 mm
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rectangle internal height 170.5 mm
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Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 300×300 mm, thickness 3 mm + offset (📦 #1673)

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Parameter Value Unit
cylinder outer diameter 150 mm
cylinder inlet length 50 mm
rectangle internal length 300 mm
rectangle internal height 300 mm
rectangle inlet length 70 mm
offset Z 4 mm
offset Y 4 mm
total length 180 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 220×90 mm, thickness 3 mm + offset (📦 #9209)

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Parameter Value Unit
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Parameter Value Unit
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cylinder inlet length 30 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 180×100.2 mm, thickness 3 mm + offset (📦 #1780)

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Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 50 mm
rectangle internal length 180 mm
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Round-to-Rectangular Tube Adapter STL file ⌀125 mm to 220×90 mm, thickness 3 mm + offset (📦 #2698)

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Round-to-Rectangular Tube Adapter STL file ⌀125 mm to 220×90 mm, thickness 3 mm + offset
3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀125 mm and a rectangular section with inner dimensions 220×90 mm. The wall thickness is 3 mm and the overall length is 200 mm. The adapter has an offset of 60 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 125 mm
cylinder inlet length 30 mm
rectangle internal length 220 mm
rectangle internal height 90 mm
rectangle inlet length 30 mm
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thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀160 mm to 300×120 mm, thickness 3 mm + offset (📦 #2008)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀160 mm to 300×120 mm, thickness 3 mm + offset
Download this 3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀160 mm and a rectangular section with internal dimensions 300×120 mm. The wall thickness is 3 mm and the overall length is 200 mm. The adapter has an offset of 35 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 160 mm
cylinder inlet length 30 mm
rectangle internal length 300 mm
rectangle internal height 120 mm
rectangle inlet length 80 mm
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thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 180×100.2 mm, thickness 3 mm + offset (📦 #1779)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 180×100.2 mm, thickness 3 mm + offset
Model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀100 mm and a rectangular section with internal dimensions 180×100.2 mm. The shell thickness is 3 mm and the total length is 240 mm. The adapter has an offset of 60 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 50 mm
rectangle internal length 180 mm
rectangle internal height 100.2 mm
rectangle inlet length 50 mm
offset Z 60 mm
offset Y 0 mm
total length 240 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 200×80 mm, thickness 3 mm + offset (📦 #4071)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 200×80 mm, thickness 3 mm + offset
Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀150 mm and a rectangular section with internal dimensions 200×80 mm. The shell thickness is 3 mm and the overall length is 200 mm. The adapter has an offset of 50 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 150 mm
cylinder inlet length 50 mm
rectangle internal length 200 mm
rectangle internal height 80 mm
rectangle inlet length 50 mm
offset Z 50 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 240×80 mm, thickness 3 mm + offset (📦 #7971)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 240×80 mm, thickness 3 mm + offset
3D model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀150 mm and a rectangular section with inner dimensions 240×80 mm. The shell thickness is 3 mm and the total length is 200 mm. The adapter has an offset of 60 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 150 mm
cylinder inlet length 30 mm
rectangle internal length 240 mm
rectangle internal height 80 mm
rectangle inlet length 30 mm
offset Z 60 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀156 mm to 220×220 mm, thickness 2 mm (📦 #4956)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀156 mm to 220×220 mm, thickness 2 mm
3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀156 mm and a rectangular section with inner dimensions 220×220 mm. The wall thickness is 2 mm and the total length is 130 mm.
Parameter Value Unit
cylinder outer diameter 156 mm
cylinder inlet length 50 mm
rectangle internal length 220 mm
rectangle internal height 220 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 130 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL file ⌀106 mm to 220×110 mm, thickness 2 mm + offset (📦 #3320)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀106 mm to 220×110 mm, thickness 2 mm + offset
3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀106 mm and a rectangular section with internal dimensions 220×110 mm. The wall thickness is 2 mm and the overall length is 290 mm. The adapter has an offset of 60 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 106 mm
cylinder inlet length 50 mm
rectangle internal length 220 mm
rectangle internal height 110 mm
rectangle inlet length 40 mm
offset Z 60 mm
offset Y 0 mm
total length 290 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀125 mm to 110×110 mm, thickness 3 mm + offset (📦 #1782)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀125 mm to 110×110 mm, thickness 3 mm + offset
File in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀125 mm and a rectangular section with internal dimensions 110×110 mm. The wall thickness is 3 mm and the total length is 200 mm. The adapter has an offset of 40 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 125 mm
cylinder inlet length 60 mm
rectangle internal length 110 mm
rectangle internal height 110 mm
rectangle inlet length 60 mm
offset Z 40 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀108 mm to 154×240 mm, thickness 5 mm + offset (📦 #4096)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀108 mm to 154×240 mm, thickness 5 mm + offset
Model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀108 mm and a rectangular section with internal dimensions 154×240 mm. The shell thickness is 5 mm and the overall length is 240 mm. The adapter has an offset of 70 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 108 mm
cylinder inlet length 50 mm
rectangle internal length 154 mm
rectangle internal height 240 mm
rectangle inlet length 50 mm
offset Z 70 mm
offset Y 0 mm
total length 240 mm
thickness 5 mm
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Round-to-Rectangular Tube Adapter STL file ⌀101.6 mm to 210.5×170.5 mm, thickness 3 mm + offset (📦 #2833)

1 object(s) - format STL
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Parameter Value Unit
cylinder outer diameter 101.6 mm
cylinder inlet length 50 mm
rectangle internal length 210.5 mm
rectangle internal height 170.5 mm
rectangle inlet length 30 mm
offset Z 14 mm
offset Y 0 mm
total length 110 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 196×86 mm, thickness 2 mm + offset (📦 #2293)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 196×86 mm, thickness 2 mm + offset
Download this 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 196×86 mm. The shell thickness is 2 mm and the total length is 200 mm. The adapter has an offset of 53 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 40 mm
rectangle internal length 196 mm
rectangle internal height 86 mm
rectangle inlet length 53 mm
offset Z 53 mm
offset Y 0 mm
total length 200 mm
thickness 2 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀108 mm to 154×240 mm, thickness 5 mm + offset (📦 #4098)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀108 mm to 154×240 mm, thickness 5 mm + offset
File in STL format of a round-to-rectangular adapter with an outer diameter of ⌀108 mm and a rectangular section with inner dimensions 154×240 mm. The shell thickness is 5 mm and the total length is 240 mm. The adapter has an offset of 70 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 108 mm
cylinder inlet length 30 mm
rectangle internal length 154 mm
rectangle internal height 240 mm
rectangle inlet length 30 mm
offset Z 70 mm
offset Y 0 mm
total length 240 mm
thickness 5 mm
chamfer chamfers on ...

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 3D file ⌀148 mm to 228×80 mm, thickness 3 mm + offset (📦 #4277)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀148 mm to 228×80 mm, thickness 3 mm + offset
File in STL format of a round-to-rectangular adapter with an outer diameter of ⌀148 mm and a rectangular section with internal dimensions 228×80 mm. The shell thickness is 3 mm and the total length is 150 mm. The adapter has an offset of 25 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 148 mm
cylinder inlet length 50 mm
rectangle internal length 228 mm
rectangle internal height 80 mm
rectangle inlet length 50 mm
offset Z 25 mm
offset Y 0 mm
total length 150 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀122 mm to 220×90 mm, thickness 3 mm + offset (📦 #2158)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀122 mm to 220×90 mm, thickness 3 mm + offset
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 220×90 mm. The wall thickness is 3 mm and the overall length is 200 mm. The adapter has an offset of 30 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 122 mm
cylinder inlet length 25 mm
rectangle internal length 220 mm
rectangle internal height 90 mm
rectangle inlet length 35 mm
offset Z 30 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀108 mm to 154×240 mm, thickness 5 mm + offset (📦 #4099)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀108 mm to 154×240 mm, thickness 5 mm + offset
Download this 3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀108 mm and a rectangular section with internal dimensions 154×240 mm. The wall thickness is 5 mm and the overall length is 240 mm. The adapter has an offset of 70 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 108 mm
cylinder inlet length 20 mm
rectangle internal length 154 mm
rectangle internal height 240 mm
rectangle inlet length 30 mm
offset Z 70 mm
offset Y 0 mm
total length 240 mm
thickness 5 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