Custom Round-to-Rectangular Tube Adapter STL 3D file ⌀250 mm to 300×105 mm, thickness 5 mm + offset 📦#7952

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Download this file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀250 mm and a rectangular section with inner dimensions 300×105 mm. The shell thickness is 5 mm and the total length is 125 mm. The adapter has an offset of 05 mm along the Y axis and 5 mm along the Z axis.
Generation date: 2026-03-22
3D Model Round-to-Rectangular Tube Adapter STL 3D file ⌀250 mm to 300×105 mm, thickness 5 mm + offset

3D model download

Free
  • round-to-rectangular-adapter-d_model7952-nb0_dd{id}.stl : 5.5 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)
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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 250 mm (≃9.84 in)
#2 cylinder inlet length 35 mm (≃1 3/8 in)
#3 rectangle internal length 300 mm (≃11 13/16 in)
#4 rectangle internal height 105 mm (≃4 1/8 in)
#5 rectangle inlet length 50 mm (≃1.97 in)
#6 offset Z 5 mm (≃3/16 in)
#7 offset Y 05 mm (≃3/16 in)
#8 total length 125 mm (≃4.92 in)
#9 thickness 5 mm (≃3/16 in)
#10 chamfer no chamfer
Metadata Value
Cylinder internal diameter 240 mm (≃9 7/16 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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Round-to-Rectangular Tube Adapter STL file ⌀200 mm to 300×125 mm, thickness 5 mm (📦 #1867)

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Parameter Value Unit
cylinder outer diameter 200 mm
cylinder inlet length 75 mm
rectangle internal length 300 mm
rectangle internal height 125 mm
rectangle inlet length 75 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 ⌀155 mm to 215×50 mm, thickness 5 mm + offset (📦 #1826)

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Parameter Value Unit
cylinder outer diameter 155 mm
cylinder inlet length 20 mm
rectangle internal length 215 mm
rectangle internal height 50 mm
rectangle inlet length 20 mm
offset Z 10 mm
offset Y 10 mm
total length 70 mm
thickness 5 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀206 mm to 300×58 mm, thickness 3 mm (📦 #2082)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀206 mm to 300×58 mm, thickness 3 mm
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Parameter Value Unit
cylinder outer diameter 206 mm
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rectangle internal length 300 mm
rectangle internal height 58 mm
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total length 100 mm
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Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 215×50 mm, thickness 5 mm + offset (📦 #1827)

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Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 215×50 mm, thickness 5 mm + offset
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Parameter Value Unit
cylinder outer diameter 150 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀200 mm to 180×60 mm, thickness 3 mm (📦 #2068)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀200 mm to 180×60 mm, thickness 3 mm
Download this file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀200 mm and a rectangular section with internal dimensions 180×60 mm. The wall thickness is 3 mm and the total length is 150 mm.
Parameter Value Unit
cylinder outer diameter 200 mm
cylinder inlet length 30 mm
rectangle internal length 180 mm
rectangle internal height 60 mm
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offset Y 0 mm
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Round-to-Rectangular Tube Adapter STL file ⌀127 mm to 215×50 mm, thickness 5 mm + offset (📦 #1828)

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Download this 3D model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀127 mm and a rectangular section with inner dimensions 215×50 mm. The shell thickness is 5 mm and the overall length is 70 mm. The adapter has an offset of 10 mm along the Y axis and 10 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 127 mm
cylinder inlet length 20 mm
rectangle internal length 215 mm
rectangle internal height 50 mm
rectangle inlet length 20 mm
offset Z 10 mm
offset Y 10 mm
total length 70 mm
thickness 5 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀104.7 mm to 299×55 mm, thickness 4 mm (📦 #9049)

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Parameter Value Unit
cylinder outer diameter 104.7 mm
cylinder inlet length 40 mm
rectangle internal length 299 mm
rectangle internal height 55 mm
rectangle inlet length 39 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀148 mm to 228×80 mm, thickness 3 mm (📦 #4274)

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Download this model in STL format of a round-to-rectangular adapter with an external diameter of ⌀148 mm and a rectangular section with inner dimensions 228×80 mm. The shell thickness is 3 mm and the overall length is 150 mm.
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 0 mm
offset Y 0 mm
total length 150 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 250×120 mm, thickness 3 mm (📦 #9716)

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Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 250×120 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 250×120 mm. The shell thickness is 3 mm and the overall length is 150 mm.
Parameter Value Unit
cylinder outer diameter 150 mm
cylinder inlet length 40 mm
rectangle internal length 250 mm
rectangle internal height 120 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 150 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀146 mm to 255×130 mm, thickness 3 mm (📦 #9795)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀146 mm to 255×130 mm, thickness 3 mm
Download this 3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀146 mm and a rectangular section with inner dimensions 255×130 mm. The wall thickness is 3 mm and the total length is 160 mm.
Parameter Value Unit
cylinder outer diameter 146 mm
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Parameter Value Unit
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cylinder inlet length 70 mm
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Parameter Value Unit
cylinder outer diameter 104.7 mm
cylinder inlet length 40 mm
rectangle internal length 299 mm
rectangle internal height 55 mm
rectangle inlet length 39 mm
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offset Y 0 mm
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thickness 4 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀160 mm to 240×100 mm, thickness 3 mm (📦 #9704)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀160 mm to 240×100 mm, thickness 3 mm
3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀160 mm and a rectangular section with inner dimensions 240×100 mm. The shell thickness is 3 mm and the total length is 200 mm.
Parameter Value Unit
cylinder outer diameter 160 mm
cylinder inlet length 50 mm
rectangle internal length 240 mm
rectangle internal height 100 mm
rectangle inlet length 70 mm
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offset Y 0 mm
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thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 280×140 mm, thickness 5 mm (📦 #9226)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 280×140 mm, thickness 5 mm
3D 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 280×140 mm. The wall thickness is 5 mm and the total length is 150 mm. A chamfer is applied on the outside of the cylindrical end.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 50 mm
rectangle internal length 280 mm
rectangle internal height 140 mm
rectangle inlet length 30 mm
offset Z 0 mm
offset Y 0 mm
total length 150 mm
thickness 5 mm
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Round-to-Rectangular Tube Adapter STL file ⌀101.6 mm to 254×101.6 mm, thickness 5 mm (📦 #2055)

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Round-to-Rectangular Tube Adapter STL file ⌀101.6 mm to 254×101.6 mm, thickness 5 mm
3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀101.6 mm and a rectangular section with internal dimensions 254×101.6 mm. The wall thickness is 5 mm and the overall length is 177.8 mm.
Parameter Value Unit
cylinder outer diameter 101.6 mm
cylinder inlet length 50 mm
rectangle internal length 254 mm
rectangle internal height 101.6 mm
rectangle inlet length 76 mm
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offset Y 0 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀145 mm to 230×130 mm, thickness 3 mm (📦 #9801)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀145 mm to 230×130 mm, thickness 3 mm
Download this model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀145 mm and a rectangular section with internal dimensions 230×130 mm. The shell thickness is 3 mm and the total length is 150 mm.
Parameter Value Unit
cylinder outer diameter 145 mm
cylinder inlet length 50 mm
rectangle internal length 230 mm
rectangle internal height 130 mm
rectangle inlet length 50 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 ⌀148 mm to 228×80 mm, thickness 3 mm + offset (📦 #4276)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀148 mm to 228×80 mm, thickness 3 mm + offset
File in STL format of a round-to-rectangular tube 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 overall length is 150 mm. The adapter has an offset of 12 mm along the Y 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 0 mm
offset Y 12 mm
total length 150 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀146 mm to 255×130 mm, thickness 3 mm (📦 #9796)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀146 mm to 255×130 mm, thickness 3 mm
Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀146 mm and a rectangular section with internal dimensions 255×130 mm. The shell thickness is 3 mm and the overall length is 150 mm.
Parameter Value Unit
cylinder outer diameter 146 mm
cylinder inlet length 40 mm
rectangle internal length 255 mm
rectangle internal height 130 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 3D file ⌀158 mm to 190×110 mm, thickness 4 mm (📦 #2532)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀158 mm to 190×110 mm, thickness 4 mm
3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀158 mm and a rectangular section with internal dimensions 190×110 mm. The wall thickness is 4 mm and the overall length is 118.4 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 158 mm
cylinder inlet length 43 mm
rectangle internal length 190 mm
rectangle internal height 110 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 118.4 mm
thickness 4 mm
chamfer chamfers on ...

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
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL 3D file ⌀250 mm to 300×105 mm, thickness 2 mm (📦 #7862)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀250 mm to 300×105 mm, thickness 2 mm
3D model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀250 mm and a rectangular section with internal dimensions 300×105 mm. The wall thickness is 2 mm and the overall length is 125 mm.
Parameter Value Unit
cylinder outer diameter 250 mm
cylinder inlet length 35 mm
rectangle internal length 300 mm
rectangle internal height 105 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 125 mm
thickness 2 mm
chamfer no chamfer

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 3D file ⌀150 mm to 300×40 mm, thickness 3 mm (📦 #8531)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 300×40 mm, thickness 3 mm
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 300×40 mm. The wall thickness is 3 mm and the overall length is 200 mm.
Parameter Value Unit
cylinder outer diameter 150 mm
cylinder inlet length 50 mm
rectangle internal length 300 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

Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 240×120 mm, thickness 5 mm (📦 #4087)

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 shell thickness is 5 mm and the overall length is 100 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 100 mm
thickness 5 mm
chamfer chamfer on t...

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 file ⌀100 mm to 240×120 mm, thickness 5 mm (📦 #4084)

1 object(s) - format STL
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
chamfer chamfer on t...