These drain tarps are designed to protect personnel and equipment from overhead leaks. They are strong yet lightweight. A special design effectively catches and drains water safely away from the work area. Heavy D-rings sewn into each corner to facilitate hanging.Sizes larger than 10' x 10' have D-rings on the center of each side. The drain spout connects to standard 3/4" garden hose which serves as the downspout. Drain tarps are offered in two materials: Light Duty, 12-mil reinforced polyethylene (not flame retardant); and Heavy Duty, 13 oz flame retardant translucent laminated polyester.