The JetRoll 690 is designed for exterior and interior openings that require a high-speed, high-cycle door that can withstand windloads, severe internal air pressure differentials or harsh environmental requirements. The 690 Series offers fast opening speeds -- up to 72" (1829mm) per second -- and our advanced VectorShield four-part safety system. The JetRoll 690 is an ideal choice for applications requiring the highest levels of speed, safety, durability, performance and climate control. It is also effective in controlling noise, dust and dirt.