Nominal Outside Diameter (in)4.5Nominal Pipe Size (in)4Pipe Bend Inside Radius (in)17.75Schedule pipe40, 80STB202 set compatibilityYes for 0.237 and 0.337 wall thickness, yes for 40 and 80 schedule pipeSTB221 set compatibilityYes for 0.237 wall thickness, yes for 40 schedule pipeWall Thickness (in).237, .337
| Nominal Outside Diameter (in) | 4.5 |
| Nominal Pipe Size (in) | 4 |
| Pipe Bend Inside Radius (in) | 17.75 |
| Schedule pipe | 40, 80 |
| STB202 set compatibility | Yes for 0.237 and 0.337 wall thickness, yes for 40 and 80 schedule pipe |
| STB221 set compatibility | Yes for 0.237 wall thickness, yes for 40 schedule pipe |
| Wall Thickness (in) | .237, .337 |