The Crescent Tank vacuum tank is completely flat inside and out. It has no baffles, allowing it to be emptied completely 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. The workstation is designed for the portable restroom industry. Freshwater is held inside the 1/2-inch-thick poly tank externally to avoid internal wastewater contamination. The slide-in is low profile for better weight distribution and barely visible in the bed of a pickup truck. The chassis required is a 1-ton or greater, 8-foot bed pickup or flatbed truck based on maximum load capacity. 585-657-4104; www.crescenttank.com.