New Pig Drive-Over DrainBlocker drain cover for use with square drains up to 36-inches. Ideal for long-term drain protection where liquid transfers, washdowns or other leak- and spill-prone jobs are common. Eliminates the need to frequently deploy and remove a temporary cover or permanently seal your drains. Tough, patented-rubber HogHyde Rubber stands up to punctures, tearing and abrasion, even under heavy vehicle traffic from tankers, trucks or forklifts. Super-sealing urethane bottom layer conforms to uneven surfaces and tightly seals drain openings to block liquid. Also withstands UV rays, infrared light and all weather conditions; keep outdoors as long as needed without worrying about degradation. Polyurethane and rubber materials resist water, oils and many chemicals. The toughest drain cover on the market. Period. Give drivers the green light and spills the red light.