Hausner Inc. is a precast concrete manufacturer located in Durant, Okla. Established in 1954, the company specializes in manufacturing septic tanks, grease traps, mud/sand traps, steel-safe rooms and clear-stream concrete aerobic tanks. It also provides several services for car-wash tanks, vault doors, polyvinyl chloride (PVC) pipe, fittings and infiltrator chambers. In addition, the company distributes storm shelters and other plumbing / sewer system supplies. Hausner Inc. is a member of the National Parks Conservation Association (NPCA).