Constructed with non-corrosive materials and fasteners, HarshGuard is available in 8 x 8 ft to 14 x 14 ft sizes. Tensioning system maintains seal on 10 x 12 ft door under wind gusts up to 70 mph and prevents curtain from blowing out of guides. Doors may also be supplied without tensioning system for interior room separation. Motor enables door speeds up to 50 ips, and active edge reverses closing door if object is detected in its path.