HDG.600.30.SPQ Size: 600Ã?600Ã?30mm  610Ã?610Ã?30mm Material: Weld Steel Finished Cover: Anti-Static Powder Sprayed Weight 15kgs/pcs Slant Rateï¼?16º Ventilation Rate: 65% ISO9001 / ISO4001 CEï¼?EN12825 Int'l Standard FS1000 Anti-Static Resistance 106~1010Ω Concentrated Load â?¥4450N/454kgs/1000bl Rolling Load Â?¥3650N Ultimate Load â?¥13350N Distribution Load â?¥23000N/sqm Panel Weight Load â?¥2000kg Fireproof Incombustible A-1 Waterproof Anti-Corrosion Anti-Slip Quality Guarantee 10 years to Lifetime Buy low price, high quality Best quality Aluminum Alloy Louver, Air Flow 65%,Common Steel Louver, Air Flow 40% , choose our products,Beijing EASYPOP Computer Room Equipment Ltd is the leading factory & Company, Warmly welcome new and old customers to visit and patronize!