Custom Round-to-Rectangular Tube Adapter STL file ⌀300 mm to 50×100 mm, thickness 2 mm 📦#1976

STL Download STL
Create a new model expert
from scratch search for a model
Download this 3D file in STL format of a round-to-rectangular adapter with an external diameter of ⌀300 mm and a rectangular section with inner dimensions 50×100 mm. The wall thickness is 2 mm and the total length is 200 mm. Chamfers are present on the outside of the cylindrical end and on the inside of the rectangular end.
Generation date: 2025-09-24
3D Model Round-to-Rectangular Tube Adapter STL file ⌀300 mm to 50×100 mm, thickness 2 mm

3D model download

Free
  • round-to-rectangular-adapter-d_model1976-nb0_dd{id}.stl : 4.7 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)
Safe download
Instant .zip download — no email, no account

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 300 mm (≃11 13/16 in)
#2 cylinder inlet length 100 mm (≃3 15/16 in)
#3 rectangle internal length 50 mm (≃1.97 in)
#4 rectangle internal height 100 mm (≃3 15/16 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 200 mm (≃7 7/8 in)
#9 thickness 2 mm (≃0.08 in)
#10 chamfer chamfers on the outside
of the cylindrical tube
and on the inside of
the rectangular tube
Metadata Value
Cylinder internal diameter 296 mm (≃11.65 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

Related 3D models

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 ⌀202 mm to 225×110 mm, thickness 3 mm (📦 #9391)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀202 mm to 225×110 mm, thickness 3 mm
Download this 3D model in STL format of a round-to-rectangular adapter with an external diameter of ⌀202 mm and a rectangular section with internal dimensions 225×110 mm. The wall thickness is 3 mm and the total length is 200 mm. 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 202 mm
cylinder inlet length 80 mm
rectangle internal length 225 mm
rectangle internal height 110 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀200 mm to 165×97.5 mm, thickness 4 mm (📦 #4932)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀200 mm to 165×97.5 mm, thickness 4 mm
Download this model in STL format of a round-to-rectangular adapter with an outer diameter of ⌀200 mm and a rectangular section with internal dimensions 165×97.5 mm. The wall thickness is 4 mm and the total length is 250 mm. 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 200 mm
cylinder inlet length 70 mm
rectangle internal length 165 mm
rectangle internal height 97.5 mm
rectangle inlet length 70 mm
offset Z 0 mm
offset Y 0 mm
total length 250 mm
thickness 4 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀280 mm to 100×100 mm, thickness 3 mm (📦 #1683)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀280 mm to 100×100 mm, thickness 3 mm
Download this 3D file in STL format of a round-to-rectangular adapter with an outer diameter of ⌀280 mm and a rectangular section with inner dimensions 100×100 mm. The shell thickness is 3 mm and the total length is 200 mm. 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 280 mm
cylinder inlet length 25 mm
rectangle internal length 100 mm
rectangle internal height 100 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 198×98 mm, thickness 2 mm (📦 #1970)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 198×98 mm, thickness 2 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 198×98 mm. The shell thickness is 2 mm and the overall length is 152 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 150 mm
cylinder inlet length 75 mm
rectangle internal length 198 mm
rectangle internal height 98 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 152 mm
thickness 2 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀250 mm to 250×150 mm, thickness 3 mm + offset (📦 #2131)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀250 mm to 250×150 mm, thickness 3 mm + offset
File in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀250 mm and a rectangular section with internal dimensions 250×150 mm. The shell thickness is 3 mm and the total length is 165 mm. The adapter has an offset of 15 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 250 mm
cylinder inlet length 50 mm
rectangle internal length 250 mm
rectangle internal height 150 mm
rectangle inlet length 80 mm
offset Z 15 mm
offset Y 0 mm
total length 165 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀175 mm to 175×65 mm, thickness 2 mm + offset (📦 #10790)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀175 mm to 175×65 mm, thickness 2 mm + offset
Download this 3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀175 mm and a rectangular section with internal dimensions 175×65 mm. The shell thickness is 2 mm and the overall length is 150 mm. The adapter has an offset of 2 mm along the Y axis and 2 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 175 mm
cylinder inlet length 70 mm
rectangle internal length 175 mm
rectangle internal height 65 mm
rectangle inlet length 50 mm
offset Z 2 mm
offset Y 2 mm
total length 150 mm
thickness 2 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀180 mm to 180×50 mm, thickness 3 mm (📦 #1915)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀180 mm to 180×50 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 inner dimensions 180×50 mm. The wall thickness is 3 mm and the overall length is 250 mm.
Parameter Value Unit
cylinder outer diameter 180 mm
cylinder inlet length 80 mm
rectangle internal length 180 mm
rectangle internal height 50 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 250 mm
thickness 3 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀161 mm to 204×60 mm, thickness 3 mm (📦 #10844)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀161 mm to 204×60 mm, thickness 3 mm
Download this 3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀161 mm and a rectangular section with internal dimensions 204×60 mm. The shell thickness is 3 mm and the overall length is 200 mm. A chamfer is present on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 161 mm
cylinder inlet length 60 mm
rectangle internal length 204 mm
rectangle internal height 60 mm
rectangle inlet length 60 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL file ⌀139.7 mm to 57.1×203.2 mm, thickness 2 mm + offset (📦 #10478)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀139.7 mm to 57.1×203.2 mm, thickness 2 mm + offset
Download this model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀139.7 mm and a rectangular section with internal dimensions 57.1×203.2 mm. The wall thickness is 2 mm and the total length is 225.1 mm. The adapter has an offset of 13.5 mm along the Y 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 139.7 mm
cylinder inlet length 99 mm
rectangle internal length 57.1 mm
rectangle internal height 203.2 mm
rectangle inlet length 99 mm
offset Z 0 mm
offset Y 13.5 mm
total length 225.1 mm
thickness 2 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀195 mm to 185×185 mm, thickness 3 mm (📦 #6601)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀195 mm to 185×185 mm, thickness 3 mm
Download this 3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀195 mm and a rectangular section with internal dimensions 185×185 mm. The shell thickness is 3 mm and the total length is 160 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 195 mm
cylinder inlet length 40 mm
rectangle internal length 185 mm
rectangle internal height 185 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 160 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀300 mm to 200×200 mm, thickness 3 mm (📦 #1684)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀300 mm to 200×200 mm, thickness 3 mm
3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀300 mm and a rectangular section with internal dimensions 200×200 mm. The shell thickness is 3 mm and the overall length is 200 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 300 mm
cylinder inlet length 25 mm
rectangle internal length 200 mm
rectangle internal height 200 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 198×98 mm, thickness 2 mm (📦 #1971)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀150 mm to 198×98 mm, thickness 2 mm
Download this 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 198×98 mm. The shell thickness is 2 mm and the overall length is 127 mm. 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 150 mm
cylinder inlet length 50 mm
rectangle internal length 198 mm
rectangle internal height 98 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 127 mm
thickness 2 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀200 mm to 172×102.6 mm, thickness 4 mm (📦 #4926)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀200 mm to 172×102.6 mm, thickness 4 mm
Download this 3D file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀200 mm and a rectangular section with internal dimensions 172×102.6 mm. The shell thickness is 4 mm and the total length is 250 mm.
Parameter Value Unit
cylinder outer diameter 200 mm
cylinder inlet length 70 mm
rectangle internal length 172 mm
rectangle internal height 102.6 mm
rectangle inlet length 70 mm
offset Z 0 mm
offset Y 0 mm
total length 250 mm
thickness 4 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀200 mm to 50×50 mm, thickness 3 mm (📦 #9649)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀200 mm to 50×50 mm, thickness 3 mm
File in STL format of a round-to-rectangular adapter with an external diameter of ⌀200 mm and a rectangular section with inner dimensions 50×50 mm. The shell thickness is 3 mm and the overall length is 150 mm.
Parameter Value Unit
cylinder outer diameter 200 mm
cylinder inlet length 40 mm
rectangle internal length 50 mm
rectangle internal height 50 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 ⌀150 mm to 240×100 mm, thickness 3 mm (📦 #7974)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀150 mm to 240×100 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 240×100 mm. The wall thickness is 3 mm and the total length is 200 mm. 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 150 mm
cylinder inlet length 60 mm
rectangle internal length 240 mm
rectangle internal height 100 mm
rectangle inlet length 60 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 3 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀145 mm to 120×120 mm, thickness 2 mm (📦 #3299)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀145 mm to 120×120 mm, thickness 2 mm
3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀145 mm and a rectangular section with inner dimensions 120×120 mm. The shell thickness is 2 mm and the total length is 100 mm. A chamfer is applied on the inside of the rectangular end.
Parameter Value Unit
cylinder outer diameter 145 mm
cylinder inlet length 50 mm
rectangle internal length 120 mm
rectangle internal height 120 mm
rectangle inlet length 20 mm
offset Z 0 mm
offset Y 0 mm
total length 100 mm
thickness 2 mm
chamfer chamfer on t...

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

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀203 mm to 191×53 mm, thickness 2 mm
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
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 2 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀175 mm to 180×65 mm, thickness 2 mm (📦 #10792)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀175 mm to 180×65 mm, thickness 2 mm
3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀175 mm and a rectangular section with inner dimensions 180×65 mm. The shell thickness is 2 mm and the overall length is 150 mm.
Parameter Value Unit
cylinder outer diameter 175 mm
cylinder inlet length 50 mm
rectangle internal length 180 mm
rectangle internal height 65 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 150 mm
thickness 2 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀203 mm to 196×56 mm, thickness 2 mm (📦 #8049)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀203 mm to 196×56 mm, thickness 2 mm
3D 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 196×56 mm. The wall thickness is 2 mm and the overall length is 200 mm.
Parameter Value Unit
cylinder outer diameter 203 mm
cylinder inlet length 40 mm
rectangle internal length 196 mm
rectangle internal height 56 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 200 mm
thickness 2 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀82 mm to 60×35 mm, thickness 2 mm (📦 #5108)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀82 mm to 60×35 mm, thickness 2 mm
Download this model in STL format of a round-to-rectangular adapter with an external diameter of ⌀82 mm and a rectangular section with internal dimensions 60×35 mm. The wall thickness is 2 mm and the total length is 205 mm. 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 82 mm
cylinder inlet length 100 mm
rectangle internal length 60 mm
rectangle internal height 35 mm
rectangle inlet length 48 mm
offset Z 0 mm
offset Y 0 mm
total length 205 mm
thickness 2 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL 3D file ⌀236 mm to 248×94 mm, thickness 3 mm (📦 #10132)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀236 mm to 248×94 mm, thickness 3 mm
Download this file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀236 mm and a rectangular section with internal dimensions 248×94 mm. The shell thickness is 3 mm and the total length is 250 mm. A chamfer is applied on the inside of the rectangular end to ease insertion.
Parameter Value Unit
cylinder outer diameter 236 mm
cylinder inlet length 40 mm
rectangle internal length 248 mm
rectangle internal height 94 mm
rectangle inlet length 100 mm
offset Z 0 mm
offset Y 0 mm
total length 250 mm
thickness 3 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL file ⌀200 mm to 100×80 mm, thickness 2 mm + offset (📦 #3852)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀200 mm to 100×80 mm, thickness 2 mm + offset
Download this 3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀200 mm and a rectangular section with inner dimensions 100×80 mm. The shell thickness is 2 mm and the overall length is 250 mm. The adapter has an offset of 30 mm along the Y axis and 30 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 200 mm
cylinder inlet length 100 mm
rectangle internal length 100 mm
rectangle internal height 80 mm
rectangle inlet length 90 mm
offset Z 30 mm
offset Y 30 mm
total length 250 mm
thickness 2 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL file ⌀123 mm to 240×120 mm, thickness 2 mm (📦 #9167)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀123 mm to 240×120 mm, thickness 2 mm
File in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀123 mm and a rectangular section with inner dimensions 240×120 mm. The wall thickness is 2 mm and the overall length is 162 mm. A chamfer is applied on the outside of the cylindrical end.
Parameter Value Unit
cylinder outer diameter 123 mm
cylinder inlet length 80 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 162 mm
thickness 2 mm
chamfer chamfer on t...

Round-to-Rectangular Tube Adapter STL file ⌀175 mm to 180×65 mm, thickness 2 mm + offset (📦 #10793)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀175 mm to 180×65 mm, thickness 2 mm + offset
3D model in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀175 mm and a rectangular section with inner dimensions 180×65 mm. The wall thickness is 2 mm and the overall length is 150 mm. The adapter has an offset of 25 mm along the Z axis.
Parameter Value Unit
cylinder outer diameter 175 mm
cylinder inlet length 50 mm
rectangle internal length 180 mm
rectangle internal height 65 mm
rectangle inlet length 50 mm
offset Z 25 mm
offset Y 0 mm
total length 150 mm
thickness 2 mm
chamfer no chamfer

Round-to-Rectangular Tube Adapter STL 3D file ⌀90 mm to 150×80 mm, thickness 2 mm (📦 #10721)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL 3D file ⌀90 mm to 150×80 mm, thickness 2 mm
3D file in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀90 mm and a rectangular section with inner dimensions 150×80 mm. The wall thickness is 2 mm and the total length is 190 mm. 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 90 mm
cylinder inlet length 70 mm
rectangle internal length 150 mm
rectangle internal height 80 mm
rectangle inlet length 50 mm
offset Z 0 mm
offset Y 0 mm
total length 190 mm
thickness 2 mm
chamfer chamfers on ...

Round-to-Rectangular Tube Adapter STL file ⌀105 mm to 80×80 mm, thickness 2 mm (📦 #3740)

1 object(s) - format STL
Round-to-Rectangular Tube Adapter STL file ⌀105 mm to 80×80 mm, thickness 2 mm
3D model in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀105 mm and a rectangular section with internal dimensions 80×80 mm. The shell thickness is 2 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 105 mm
cylinder inlet length 50 mm
rectangle internal length 80 mm
rectangle internal height 80 mm
rectangle inlet length 51 mm
offset Z 0 mm
offset Y 0 mm
total length 150 mm
thickness 2 mm
chamfer chamfers on ...