Sea-Dog Thru-Hull w/Scupper Valve - Injection Molded Acetel [520510-1] Marine Navigation & Instruments | NMEA Cables & Sensors Highly Accurate Two Antenna Satellite

Highly Accurate Two Antenna Satellite Compass & Rate Sensor System

Hole Size: Fiberglass or wood hull 95 mm (3-3/4")

Top Fittings connect to tubing as a Top Cap or Top Insert for 3/4” or 7/8” round tubing or 1” square tubing

Strongest (40% stronger) and most economical refill available anywhere

Sea-Dog Thru-Hull w/Scupper Valve - Injection Molded Acetel [520510-1] Marine Navigation & Instruments | NMEA Cables & Sensors Highly Accurate Two Antenna SatelliteThru Hull with Scupper Valve Injection Molded Acetel This Thru Hull Scupper Valve mounts through the transom and provides a water exit for boats with self bailing cockpits. Ideal for above the water line drainage. Valve features a soft black flapper that seals to prevent backwash. For use with 1 1 2" hose. Compatible with most self bailing applications. Constructed of injection molded acetal. Installs with four #6 FH fasteners (included).