davetrouble
New Member
I am replacing a toilet flange for a 3" PVC hub fitting. I understand that one option is a PVC 3" spigot flange that is designed to fit inside a 3" PVC hub fitting. But it also occurred to me that a PVC 4" spigot flange that is designed to fit inside a 4" PVC hub fitting might also fit on the outside of a 3" PVC hub fitting. That is, as long as the wall thickness of the 3" hub fitting was 1/4". Now, when I measure the wall thickness of the particular 3" hub fitting that I am dealing it does indeed appear to be 1/4". However, I am not able to find anywhere where the wall thickness of a 3" PVC hub is specified to be 1/4" nor can i find anywhere where it is mentioned that a PVC 4" spigot flange will fit on the outside of a 3" PVC hub fitting. So I am wondering if this is a reasonable option or not?