Specifications include, but are not limited to: Rapid roll-up doors must be able to withstand a wind pressure of twenty (20) pounds per square foot (psf) of door area. Rapid roll-up door must provide a near-airtight seal and knockaway feature for easy reassembly upon impact. After accidental impact, door must be capable of reset from ground level without the use of ladders, tools or lift equipment. Rapid roll-up doors must be automatic closing, upward coiling, interlocking rolled slat, curtain type. Rapid roll-up doors must include the following: A. Motor operated, vertically opening, rapid roll-up type. B. Designed for high-cycle use on exterior openings. C. Springless type, operated by electric power with auxiliary hand chain operation. D. Complete with guides, hardware, fastenings, operating mechanisms and accessories. E. Surface mounted type with guides at jambs set back at sufficient distance from the interior side of the jambs to provide a clear opening width from jamb to jamb and a clear opening height when the door is in fully open position. F. Horizontal guide mounted wind bar. G. Door curtain shall have a temperature service range of -40º F to 180º F.
