The 5" screw-in deck plate is designed with a rubber O-ring that creates a watertight seal for safety. In addition, this particular plate style has a single-start, non-jamming (no cross-threading), extra-strong, self-cleaning buttress thread
Material: UV-resistant ASA plastic
Inside Diameter: 5"
Outside Diameter: 6 3/4" (171.45mm)
Cutout Diameter: 5 1/2" (139mm)
Features: Coarse Thread w/ leak-proof function
PRODUCT NUMBER: FO-84