Dometic DHT110L Holding Tank The Dometic DHT88L Holding Tank is leak proof, constructed with precut holes and tested fittings that can revolve making it easy to retrofit. The DHT88L is also designed odor free and made from highly durable polyethylene 6.3 mm wall thickness. The holding tanks capacity is 88 l for marine toilets. No leaks or offensive odors; Made from highly durable polyethylene with a 6.3 mm wall thickness.; Easy to fit with pre-drilled holes and pre-tested, installed fittings that can rotate; 88 l (23 gal.) waste capacity; Two separate outlets for dockside and overboard discharge; Vacuum relief valve prevents damage from high-capacity dockside vacuum pumps; Specifications: Dimensions; Depth: 13 12/16"; Width: 47 3/16"; Height: 13 11/16"; Weight: 30.90 lbs;