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

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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.
Generation date: 2026-03-18
3D Model Round-to-Rectangular Tube Adapter STL 3D file ⌀250 mm to 300×105 mm, thickness 2 mm

3D model download

Free
  • round-to-rectangular-adapter-d_model7862-nb0_dd{id}.stl : 5.4 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 0 mm (0 in)
#7 offset Y 0 mm (0 in)
#8 total length 125 mm (≃4.92 in)
#9 thickness 2 mm (≃0.08 in)
#10 chamfer no chamfer
Metadata Value
Cylinder internal diameter 246 mm (≃9 11/16 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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Parameter Value Unit
cylinder outer diameter 206 mm
cylinder inlet length 10 mm
rectangle internal length 300 mm
rectangle internal height 58 mm
rectangle inlet length 50 mm
offset Z 0 mm
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Round-to-Rectangular Tube Adapter STL file ⌀203 mm to 196×56 mm, thickness 2 mm (📦 #8049)

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Parameter Value Unit
cylinder outer diameter 203 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀203 mm to 191×53 mm, thickness 2 mm (📦 #8071)

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Download this file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀203 mm and a rectangular section with inner dimensions 191×53 mm. The shell thickness is 2 mm and the total length is 200 mm.
Parameter Value Unit
cylinder outer diameter 203 mm
cylinder inlet length 40 mm
rectangle internal length 191 mm
rectangle internal height 53 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
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Round-to-Rectangular Tube Adapter STL file ⌀154 mm to 226×90 mm, thickness 2 mm (📦 #9231)

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Parameter Value Unit
cylinder outer diameter 154 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 226×90 mm, thickness 2 mm (📦 #9222)

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Parameter Value Unit
cylinder outer diameter 150 mm
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Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 215×84 mm, thickness 2 mm (📦 #9210)

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Parameter Value Unit
cylinder outer diameter 150 mm
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Round-to-Rectangular Tube Adapter STL file ⌀152 mm to 175×100 mm, thickness 2 mm (📦 #8964)

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Parameter Value Unit
cylinder outer diameter 152 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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Round-to-Rectangular Tube Adapter STL 3D file ⌀148 mm to 228×80 mm, thickness 3 mm
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Parameter Value Unit
cylinder outer diameter 148 mm
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rectangle internal height 80 mm
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Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 250×120 mm, thickness 3 mm (📦 #9716)

1 object(s) - format STL
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
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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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Parameter Value Unit
cylinder outer diameter 146 mm
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Parameter Value Unit
cylinder outer diameter 160 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)

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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
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rectangle internal length 230 mm
rectangle internal height 130 mm
rectangle inlet length 50 mm
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offset Y 0 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
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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
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Round-to-Rectangular Tube Adapter STL file ⌀125 mm to 240×120 mm, thickness 2 mm (📦 #9162)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀125 mm to 240×120 mm, thickness 2 mm
Download this model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀125 mm and a rectangular section with internal dimensions 240×120 mm. The shell thickness is 2 mm and the total length is 138 mm. A chamfer is present on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 125 mm
cylinder inlet length 50 mm
rectangle internal length 240 mm
rectangle internal height 120 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 138 mm
thickness 2 mm
chamfer chamfer on t...

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 ⌀155 mm to 151×71 mm, thickness 2 mm (📦 #2375)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀155 mm to 151×71 mm, thickness 2 mm
Download this 3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀155 mm and a rectangular section with inner dimensions 151×71 mm. The wall thickness is 2 mm and the total length is 100 mm.
Parameter Value Unit
cylinder outer diameter 155 mm
cylinder inlet length 25 mm
rectangle internal length 151 mm
rectangle internal height 71 mm
rectangle inlet length 25 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 2 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
chamfer no chamfer

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
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
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 200×80 mm, thickness 3 mm (📦 #4072)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 200×80 mm, thickness 3 mm
3D model 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 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 200 mm
rectangle internal height 80 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 file ⌀130 mm to 300×50 mm, thickness 2 mm (📦 #6771)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀130 mm to 300×50 mm, thickness 2 mm
File in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀130 mm and a rectangular section with inner dimensions 300×50 mm. The wall thickness is 2 mm and the overall length is 80 mm.
Parameter Value Unit
cylinder outer diameter 130 mm
cylinder inlet length 20 mm
rectangle internal length 300 mm
rectangle internal height 50 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 80 mm
thickness 2 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 ⌀155 mm to 144×127 mm, thickness 3 mm (📦 #9857)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀155 mm to 144×127 mm, thickness 3 mm
Download this file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀155 mm and a rectangular section with internal dimensions 144×127 mm. The shell thickness is 3 mm and the total length is 108 mm.
Parameter Value Unit
cylinder outer diameter 155 mm
cylinder inlet length 30 mm
rectangle internal length 144 mm
rectangle internal height 127 mm
rectangle inlet length 57 mm
offset Z 0 mm
offset Y 0 mm
total length 108 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 200×60 mm, thickness 3 mm (📦 #7972)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 200×60 mm, thickness 3 mm
Download this model in STL format of a round-to-rectangular adapter with an external diameter of ⌀150 mm and a rectangular section with internal dimensions 200×60 mm. The shell thickness is 3 mm and the overall length is 200 mm.
Parameter Value Unit
cylinder outer diameter 150 mm
cylinder inlet length 30 mm
rectangle internal length 200 mm
rectangle internal height 60 mm
rectangle inlet length 30 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 ⌀206 mm to 300×50 mm, thickness 3 mm (📦 #2081)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀206 mm to 300×50 mm, thickness 3 mm
3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀206 mm and a rectangular section with internal dimensions 300×50 mm. The shell thickness is 3 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 206 mm
cylinder inlet length 10 mm
rectangle internal length 300 mm
rectangle internal height 50 mm
rectangle inlet length 47 mm
offset Z 0 mm
offset Y 0 mm
total length 150 mm
thickness 3 mm
chamfer chamfers on ...