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Your cart is empty.This Whale Gray Waste Tank has a unique and innovative triple-seal lid that isolates the electronics from harsh gray waste for the most reliable operation and durability. This 2. 1-gallon (8 liters) tank has an integrated sensor for automatic pump control, and the solid-state switch is protected against water ingress. The tank is constructed and wired for the easy addition of any 12V or 24V pump system (up to 20 amps with no relay required). The pump can be side-mounted, and is sold separately. The tank is also designed for the easy installation of inlet and outlet hoses, with ports shaped for drilling accuracy. Two inlet hose connections are ¾-in. (19mm); three are 1-in. (25mm); and three are 1. 5-in. (38mm). There is one ¾-in. (19mm) outlet hose connection, and one of 1-in. (25mm). Premium, durable materials ensure a long, reliable service life. The tank is made of MDPE, the seals are EPDM/Neoprene and Monprene , and the lid is made of glass-filled polypropylene and ABS. The tank is backed by a 3-year . Whale designs and manufactures reliable marine water system products which are easy to install and use; providing boaters with hot and cold water, waste management and durable bilge pumps for peace of mind.