Clear and white ABS deck plates are sealed with a rubber O-ring for maximum watertightness and safety. Designed to be removable without the need for special tools, they feature a single-start, non-jamming (no cross-threading), extra-strong, self-cleaning buttress thread. A patented back-up sealing wall maintains the plate's waterproof integrity even if the O-ring is lost or damaged. Available with smooth or dimpled non-skid plates. Clear plate models come with white or black flange rings. Use only 100% silicone caulk. Each ShWt 1
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