The 400-gallon aluminum vacuum tank from Mid-State Tank Co. comes with 20-inch top and rear manways, primary, three 5-inch sight eyes, pressure relief valve, 4-inch inlet, 6-inch discharge, full hose trays and a hose support in the rear. Safety specs include a ladder to the top manway, along with LED lights and wiring, rear work lights, a full mounting kit and a heavy-duty rear bumper. Tanks are DOT and ISO 9001-2008 QMS registered. Aluminum and stainless steel vacuum tanks are available in capacities up to 5,500 gallons. 800/722-8384; www.midstatetank.com.