The Crescent Tank Mfg. Vacuum Tank is completely flat inside and out. It has no baffles, allowing it to be fully emptied to avoid internal corrosion. With the included pump at specified cubic feet per minute, unnecessary fatigue of the structure is eliminated and the life of the tank is prolonged. It is made from 1/4-inch steel, making it structurally strong. The workstation is designed for the portable restroom industry. Freshwater is held inside an external 1/2-inch poly tank to avoid contamination. The slide-in unit has a low profile for better weight distribution and is barely visible in the bed of a pickup truck. A 1-ton or greater chassis is required and an 8-foot bed pickup or flatbed truck, based on maximum load capacity. 585/657-4104; www.crescenttank.com.