GPH Pumps are ignition protected. Double insulated long stack motor. Double strainer non-clogging protection. Compact, efficient and maintenance free. Totally submersible. Runs 100° cooler. No burn-out when dry. Moisture tight Teflon seals. Silent running. Vibrationless. Anti-airlock feature. Housing of heat resistant acetal resin. Heavy 5/16" stainless steel shaft. Nylon/fiberglass impeller for strength. From 360 GPH to 3700GPH. Rule has a Bilge Pump for you.