Custom Round-to-Rectangular Tube Adapter STL 3D file ⌀104.7 mm to 299×55 mm, thickness 4 mm 📦#9049

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3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀104.7 mm and a rectangular section with inner dimensions 299×55 mm. The wall thickness is 4 mm and the overall length is 120 mm.
Generation date: 2026-05-19
3D Model Round-to-Rectangular Tube Adapter STL 3D file ⌀104.7 mm to 299×55 mm, thickness 4 mm

3D model download

Free
  • round-to-rectangular-adapter-d_model9049-nb0_dd{id}.stl : 4.4 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 104.7 mm (≃4 1/8 in)
#2 cylinder inlet length 40 mm (≃1 9/16 in)
#3 rectangle internal length 299 mm (≃11.77 in)
#4 rectangle internal height 55 mm (≃2.17 in)
#5 rectangle inlet length 39 mm (≃1.54 in)
#6 offset Z 0 mm (0 in)
#7 offset Y 0 mm (0 in)
#8 total length 120 mm (≃4.72 in)
#9 thickness 4 mm (≃0.16 in)
#10 chamfer no chamfer
Metadata Value
Cylinder internal diameter 96.7 mm (≃3 13/16 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 3D file ⌀104.7 mm to 299×55 mm, thickness 4 mm + offset (📦 #9048)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀104.7 mm to 299×55 mm, thickness 4 mm + offset
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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
offset Z 18 mm
offset Y 0 mm
total length 120 mm
thickness 4 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀85 mm to 215×25 mm, thickness 4 mm (📦 #7565)

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Parameter Value Unit
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cylinder inlet length 35 mm
rectangle internal length 215 mm
rectangle internal height 25 mm
rectangle inlet length 35 mm
offset Z 0 mm
offset Y 0 mm
total length 140 mm
thickness 4 mm
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Round-to-Rectangular Tube Adapter STL file ⌀112 mm to 294×67 mm, thickness 3 mm (📦 #1628)

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Parameter Value Unit
cylinder outer diameter 112 mm
cylinder inlet length 30 mm
rectangle internal length 294 mm
rectangle internal height 67 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 3D file ⌀101.6 mm to 300×28 mm, thickness 3 mm (📦 #3400)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀101.6 mm to 300×28 mm, thickness 3 mm
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Parameter Value Unit
cylinder outer diameter 101.6 mm
cylinder inlet length 50 mm
rectangle internal length 300 mm
rectangle internal height 28 mm
rectangle inlet length 50 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀101 mm to 300×28 mm, thickness 3 mm (📦 #3401)

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Round-to-Rectangular Tube Adapter STL 3D file ⌀101 mm to 300×28 mm, thickness 3 mm
3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀101 mm and a rectangular section with internal dimensions 300×28 mm. The wall thickness is 3 mm and the overall length is 148 mm.
Parameter Value Unit
cylinder outer diameter 101 mm
cylinder inlet length 50 mm
rectangle internal length 300 mm
rectangle internal height 28 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 148 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀103 mm to 290×28 mm, thickness 3 mm (📦 #4429)

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Download this model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀103 mm and a rectangular section with internal dimensions 290×28 mm. The wall thickness is 3 mm and the total length is 148 mm.
Parameter Value Unit
cylinder outer diameter 103 mm
cylinder inlet length 50 mm
rectangle internal length 290 mm
rectangle internal height 28 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 148 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀101 mm to 250×38 mm, thickness 3 mm (📦 #3403)

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Parameter Value Unit
cylinder outer diameter 101 mm
cylinder inlet length 50 mm
rectangle internal length 250 mm
rectangle internal height 38 mm
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thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀77.5 mm to 300×12.5 mm, thickness 3 mm (📦 #9125)

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Parameter Value Unit
cylinder outer diameter 77.5 mm
cylinder inlet length 30 mm
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thickness 3 mm
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Parameter Value Unit
cylinder outer diameter 101 mm
cylinder inlet length 50 mm
rectangle internal length 250 mm
rectangle internal height 38 mm
rectangle inlet length 50 mm
offset Z 17.5 mm
offset Y 0 mm
total length 135 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀124 mm to 224×94 mm, thickness 3 mm (📦 #10172)

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Parameter Value Unit
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Parameter Value Unit
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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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offset Y 0 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 300×40 mm, thickness 3 mm (📦 #8531)

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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
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offset Y 0 mm
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Round-to-Rectangular Tube Adapter STL 3D file ⌀105 mm to 300×60 mm, thickness 3 mm (📦 #9146)

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Parameter Value Unit
cylinder outer diameter 105 mm
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offset Y 0 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
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Parameter Value Unit
cylinder outer diameter 150 mm
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rectangle internal length 250 mm
rectangle internal height 120 mm
rectangle inlet length 20 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 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
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL file ⌀120 mm to 205×100 mm, thickness 3 mm + offset (📦 #8381)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀120 mm to 205×100 mm, thickness 3 mm + offset
Download this model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀120 mm and a rectangular section with internal dimensions 205×100 mm. The shell thickness is 3 mm and the total 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 205 mm
rectangle internal height 100 mm
rectangle inlet length 12 mm
offset Z 3 mm
offset Y 3 mm
total length 125 mm
thickness 3 mm
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Round-to-Rectangular Tube Adapter STL file ⌀120 mm to 205×100 mm, thickness 3 mm + offset (📦 #8380)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀120 mm to 205×100 mm, thickness 3 mm + offset
Download this 3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀120 mm and a rectangular section with inner dimensions 205×100 mm. The wall thickness is 3 mm and the total 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 50 mm
rectangle internal length 205 mm
rectangle internal height 100 mm
rectangle inlet length 15 mm
offset Z 3 mm
offset Y 3 mm
total length 125 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀76.2 mm to 300×50.8 mm, thickness 4 mm (📦 #2133)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀76.2 mm to 300×50.8 mm, thickness 4 mm
Download this file in STL format of a round-to-rectangular adapter with an external diameter of ⌀76.2 mm and a rectangular section with internal dimensions 300×50.8 mm. The wall thickness is 4 mm and the overall length is 166 mm. A chamfer is present on the outside of the cylindrical end to ease insertion.
Parameter Value Unit
cylinder outer diameter 76.2 mm
cylinder inlet length 76 mm
rectangle internal length 300 mm
rectangle internal height 50.8 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 166 mm
thickness 4 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL 3D file ⌀125 mm to 220×90 mm, thickness 3 mm (📦 #2671)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀125 mm to 220×90 mm, thickness 3 mm
Download this 3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀125 mm and a rectangular section with inner dimensions 220×90 mm. The shell thickness is 3 mm and the total length is 200 mm.
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
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
chamfer no chamfer