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. Uses RULE 80 hose, 60 thru-hull fitting, 69 hose adapter and 31, 35, 37, 39, 35F and 37F automatic switches. 1-1/8" discharge outlet.