Oatey 43551 Closet Flange Replacement Ring, 3 4-Inch, Brass For use 4 in closet flanges 3 countersunk holes and 3 closet bolt slots for secure attachment to the floor Easy installation 1 year warranty 3-Inch Spigot Closet Flange fits inside the hub end of 3-Inch Schedule 40 DWV fitting 4-Inch Spigot Closet Flange fits inside the hub end of 4-Inch Schedule 40 DWV fitting Solvent weld into fitting-short throat length is perfect for use in tight spaces and where the fitting is close to the sub-floor Four mounting slots for proper fit and alignment of closet bolts to the toilet