Custom Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 128×129 mm, thickness 5 mm 📦#6189

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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 128×129 mm. The wall thickness is 5 mm and the overall length is 60 mm.
Generation date: 2026-01-07
3D Model Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 128×129 mm, thickness 5 mm

3D model download

Free
  • round-to-rectangular-adapter-d_model6189-nb0_dd{id}.stl : 2.1 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 5 mm (≃3/16 in)
#3 rectangle internal length 128 mm (≃5.04 in)
#4 rectangle internal height 129 mm (≃5.08 in)
#5 rectangle inlet length 5 mm (≃3/16 in)
#6 offset Z 0 mm (0 in)
#7 offset Y 0 mm (0 in)
#8 total length 60 mm (≃2 3/8 in)
#9 thickness 5 mm (≃3/16 in)
#10 chamfer no chamfer
Metadata Value
Cylinder internal diameter 90 mm (≃3.54 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 ⌀100 mm to 125.5×127.5 mm, thickness 5 mm (📦 #6188)

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Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 125.5×127.5 mm, thickness 5 mm
Download this file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀100 mm and a rectangular section with internal dimensions 125.5×127.5 mm. The shell thickness is 5 mm and the total length is 60 mm.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 5 mm
rectangle internal length 125.5 mm
rectangle internal height 127.5 mm
rectangle inlet length 5 mm
offset Z 0 mm
offset Y 0 mm
total length 60 mm
thickness 5 mm
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Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 135.5×137.5 mm, thickness 5 mm (📦 #6184)

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Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 135.5×137.5 mm, thickness 5 mm
Download this file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀100 mm and a rectangular section with inner dimensions 135.5×137.5 mm. The wall thickness is 5 mm and the overall length is 50 mm.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 10 mm
rectangle internal length 135.5 mm
rectangle internal height 137.5 mm
rectangle inlet length 10 mm
offset Z 0 mm
offset Y 0 mm
total length 50 mm
thickness 5 mm
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Round-to-Rectangular Tube Adapter STL file ⌀120 mm to 90×140 mm, thickness 5 mm (📦 #9157)

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Parameter Value Unit
cylinder outer diameter 120 mm
cylinder inlet length 20 mm
rectangle internal length 90 mm
rectangle internal height 140 mm
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thickness 5 mm
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Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 130×100 mm, thickness 5 mm (📦 #3918)

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Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 130×100 mm, thickness 5 mm
File in STL format of a round-to-rectangular adapter with an outer diameter of ⌀100 mm and a rectangular section with internal dimensions 130×100 mm. The shell thickness is 5 mm and the total length is 80 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 130 mm
rectangle internal height 100 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀120 mm to 130×80 mm, thickness 5 mm (📦 #9159)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀120 mm to 130×80 mm, thickness 5 mm
File in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀120 mm and a rectangular section with inner dimensions 130×80 mm. The shell thickness is 5 mm and the total length is 95 mm.
Parameter Value Unit
cylinder outer diameter 120 mm
cylinder inlet length 20 mm
rectangle internal length 130 mm
rectangle internal height 80 mm
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thickness 5 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀120 mm to 65×65 mm, thickness 5 mm (📦 #4112)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀120 mm to 65×65 mm, thickness 5 mm
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 inner dimensions 65×65 mm. The shell thickness is 5 mm and the overall length is 50 mm.
Parameter Value Unit
cylinder outer diameter 120 mm
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rectangle internal height 65 mm
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Round-to-Rectangular Tube Adapter STL file ⌀50 mm to 149.5×145 mm, thickness 4 mm (📦 #6247)

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Parameter Value Unit
cylinder outer diameter 50 mm
cylinder inlet length 5 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 135.5×137.5 mm, thickness 5 mm (📦 #6186)

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Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 40 mm
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offset Y 0 mm
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Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 138×139 mm, thickness 5 mm (📦 #6192)

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Parameter Value Unit
cylinder outer diameter 100 mm
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rectangle internal length 138 mm
rectangle internal height 139 mm
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total length 65 mm
thickness 5 mm
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Round-to-Rectangular Tube Adapter STL file ⌀120 mm to 55×55 mm, thickness 5 mm (📦 #4123)

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Round-to-Rectangular Tube Adapter STL file ⌀120 mm to 55×55 mm, thickness 5 mm
Download this 3D file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀120 mm and a rectangular section with inner dimensions 55×55 mm. The wall thickness is 5 mm and the total length is 50 mm.
Parameter Value Unit
cylinder outer diameter 120 mm
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Parameter Value Unit
cylinder outer diameter 120 mm
cylinder inlet length 5 mm
rectangle internal length 50 mm
rectangle internal height 50 mm
rectangle inlet length 5 mm
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total length 50 mm
thickness 5 mm
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Round-to-Rectangular Tube Adapter STL file ⌀100 mm to 240×120 mm, thickness 5 mm (📦 #4084)

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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
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Round-to-Rectangular Tube Adapter STL file ⌀120 mm to 45×45 mm, thickness 5 mm (📦 #4113)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀120 mm to 45×45 mm, thickness 5 mm
Download this file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀120 mm and a rectangular section with internal dimensions 45×45 mm. The shell thickness is 5 mm and the overall length is 50 mm.
Parameter Value Unit
cylinder outer diameter 120 mm
cylinder inlet length 10 mm
rectangle internal length 45 mm
rectangle internal height 45 mm
rectangle inlet length 5 mm
offset Z 0 mm
offset Y 0 mm
total length 50 mm
thickness 5 mm
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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 ⌀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 ⌀100 mm to 125.5×127.5 mm, thickness 5 mm (📦 #6187)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 125.5×127.5 mm, thickness 5 mm
File in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀100 mm and a rectangular section with inner dimensions 125.5×127.5 mm. The shell thickness is 5 mm and the total length is 100 mm.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 40 mm
rectangle internal length 125.5 mm
rectangle internal height 127.5 mm
rectangle inlet length 40 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 5 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀78 mm to 128×30 mm, thickness 4 mm (📦 #2437)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀78 mm to 128×30 mm, thickness 4 mm
Download this model in STL format of a round-to-rectangular adapter with an external diameter of ⌀78 mm and a rectangular section with internal dimensions 128×30 mm. The shell thickness is 4 mm and the total length is 80 mm.
Parameter Value Unit
cylinder outer diameter 78 mm
cylinder inlet length 20 mm
rectangle internal length 128 mm
rectangle internal height 30 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 80 mm
thickness 4 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀74 mm to 128×30 mm, thickness 4 mm (📦 #3082)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀74 mm to 128×30 mm, thickness 4 mm
3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀74 mm and a rectangular section with internal dimensions 128×30 mm. The shell thickness is 4 mm and the total length is 80 mm.
Parameter Value Unit
cylinder outer diameter 74 mm
cylinder inlet length 20 mm
rectangle internal length 128 mm
rectangle internal height 30 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 80 mm
thickness 4 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀127 mm to 215×50 mm, thickness 5 mm + offset (📦 #1828)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀127 mm to 215×50 mm, thickness 5 mm + offset
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
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀110 mm to 120×75 mm, thickness 5 mm (📦 #9107)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀110 mm to 120×75 mm, thickness 5 mm
Download this 3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀110 mm and a rectangular section with internal dimensions 120×75 mm. The shell thickness is 5 mm and the total length is 80 mm. A chamfer is present on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 110 mm
cylinder inlet length 50 mm
rectangle internal length 120 mm
rectangle internal height 75 mm
rectangle inlet length 10 mm
offset Z 0 mm
offset Y 0 mm
total length 80 mm
thickness 5 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 215×50 mm, thickness 5 mm + offset (📦 #1827)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 215×50 mm, thickness 5 mm + offset
Model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀150 mm and a rectangular section with inner dimensions 215×50 mm. The wall thickness is 5 mm and the total 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 150 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
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀79 mm to 121×56 mm, thickness 4 mm (📦 #7533)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀79 mm to 121×56 mm, thickness 4 mm
3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀79 mm and a rectangular section with internal dimensions 121×56 mm. The shell thickness is 4 mm and the total length is 90 mm.
Parameter Value Unit
cylinder outer diameter 79 mm
cylinder inlet length 35 mm
rectangle internal length 121 mm
rectangle internal height 56 mm
rectangle inlet length 35 mm
offset Z 0 mm
offset Y 0 mm
total length 90 mm
thickness 4 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀155 mm to 215×50 mm, thickness 5 mm + offset (📦 #1826)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀155 mm to 215×50 mm, thickness 5 mm + offset
Download this file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀155 mm and a rectangular section with internal dimensions 215×50 mm. The shell thickness is 5 mm and the total 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 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
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀79 mm to 121×56 mm, thickness 4 mm + offset (📦 #7534)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀79 mm to 121×56 mm, thickness 4 mm + offset
Download this 3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀79 mm and a rectangular section with internal dimensions 121×56 mm. The shell thickness is 4 mm and the total length is 90 mm. The adapter has an offset of 10 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 79 mm
cylinder inlet length 35 mm
rectangle internal length 121 mm
rectangle internal height 56 mm
rectangle inlet length 35 mm
offset Z 10 mm
offset Y 0 mm
total length 90 mm
thickness 4 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀80 mm to 80×80 mm, thickness 3 mm (📦 #1527)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀80 mm to 80×80 mm, thickness 3 mm
3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀80 mm and a rectangular section with inner dimensions 80×80 mm. The shell thickness is 3 mm and the overall length is 50 mm.
Parameter Value Unit
cylinder outer diameter 80 mm
cylinder inlet length 15 mm
rectangle internal length 80 mm
rectangle internal height 80 mm
rectangle inlet length 15 mm
offset Z 0 mm
offset Y 0 mm
total length 50 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 138×139 mm, thickness 5 mm (📦 #6193)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀100 mm to 138×139 mm, thickness 5 mm
File in STL format of a round-to-rectangular adapter with an external diameter of ⌀100 mm and a rectangular section with internal dimensions 138×139 mm. The shell thickness is 5 mm and the total length is 200 mm.
Parameter Value Unit
cylinder outer diameter 100 mm
cylinder inlet length 40 mm
rectangle internal length 138 mm
rectangle internal height 139 mm
rectangle inlet length 5 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 5 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀126.0 mm to 120×70 mm, thickness 3 mm (📦 #2232)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀126.0 mm to 120×70 mm, thickness 3 mm
File in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀126.0 mm and a rectangular section with inner dimensions 120×70 mm. The wall thickness is 3 mm and the overall length is 50 mm.
Parameter Value Unit
cylinder outer diameter 126.0 mm
cylinder inlet length 15 mm
rectangle internal length 120 mm
rectangle internal height 70 mm
rectangle inlet length 15 mm
offset Z 0 mm
offset Y 0 mm
total length 50 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀76 mm to 92×92 mm, thickness 3 mm (📦 #6516)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀76 mm to 92×92 mm, thickness 3 mm
3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀76 mm and a rectangular section with inner dimensions 92×92 mm. The wall thickness is 3 mm and the total length is 90 mm.
Parameter Value Unit
cylinder outer diameter 76 mm
cylinder inlet length 20 mm
rectangle internal length 92 mm
rectangle internal height 92 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 90 mm
thickness 3 mm
chamfer no chamfer