RECOMMENDED SPECIFICATIONS Steel Roller Shutter, 4-hour fire rated, Product Code SR/FS/100. CURTAIN Constructed from interlocking, galvanised, steel roll-formed slats, 100mm x 1.0mm with cast iron end clips fixed with rivets. ROLLER DRUM ASSEMBLY A robust, seamless mild steel tube, 168mm O.D. x 5mm wall. A mild steel shaft 42mm x 4.0mm with sealed bearings is incorporated. These are self-aligning. The axle is fixed through 10mm mild steel brackets mounted to 75mm x 75mm x 8mm steel angles. BOTTOM RAILS AND GUIDES The bottom rail comprises 50mm x 50mm x 4mm Duragal steel angles, mounted back-to-back of the bottom slat. Vertical guides are manufactured from galvanised, roll-formed mild steel 100mm x 48mm x 23mm thick "U" channel. Fixing is by 40mm x 8mm mild steel fixing lugs, spaced at 700mm centres.

OPERATION AND GEARBOX By hand chain through a reduction gearbox mounted onto one end of the drum. The reduction gearbox incorporates a manual fire door hoist-controlled descent mechanism and a fusible link rated at 71ºC. ORIENTATION The Test Door covered by CERTIFICATE OF TEST 1041 was tested with the drum and descent limiting gear exposed to the fire.  The Standard is AS 1530.4-1997.  SIZES Standard fire shutters may not exceed a width of 3600mm, or 14m².  OPINION NUMBER FCO - 1832, issued by the CSIRO on 07 April 2000 E conditionally permits sizes up to 6000mm wide x 5000mm high.  The OPINION refers exclusively to the performance conditions of the roller shutter door system if it were subject to fire test according to AS 1530.4-1997. OPTIONAL EXTRAS MOTORISATION via an approved 3-phase motor