
**STANDARD DUTY #502 SERIES
If top of old plastic insert measures:
**HEAVY DUTY #503 SERIES
Style #502A will fit most 1 1/2" Outside Diameter steel pipe
Style #502B will fit most 1 3/4" Outside Diameter steel pipe
Style #502C will fit most 2" Outside Diameter steel pipe
Style #503B will fit most 1 3/4" Outside Diameter steel pipe
Style #503C will fit most 1 3/4"-1 7/8" Outside Diameter steel pipe
Style #503D will fit most 2 1/4"-2 3/8" Outside Diameter steel pipe


**Wall thickness of your particular steel pipe may cause insert to not fit.
***We cannot guarantee all measurements will be correct for your particular pipe dimension or pipe wall thickness.