for use on the end of the mounting bushing countersunk holes and cabinet bolt slots for secure attatchment to the floor the 3″ spigot cabinet flange fits inside the end of the 3″ fitting hub of 40 dwv table the 4″ cabinet flange fits inside the 4″ uhb end of the 40 dwv table solvent welding on theshort throat length is peerfect for use in tight spacesand where fitting is close to the subfloor 4 mounting slots for proper fit and alignment of cabinet to toilet bolts
