The sectional overhead door is traditionally used in industrial applications where higher insulation properties are required. Sectional Doors, sometimes referred to as up and over doors, help reduce noise and are perfectly suited for high usage openings. Each door is manufactured to exact opening sizes and is available in push up, chain hoist and electrical operation. Ultimate design for industrial & commercial. The gaskets, made of a special non ageing rubber, seal the perimeter of the door opening. Sectional Overhead Doors produce a perfect seal, preventing water, air and dust infiltration.