Providing and fixing of Himalyan Acoustics ‘’ Woodlot’’ FR Grades 2430x131x16mm made of exterior grade MDF backed with acoustical Fleece providing sound absorption of 0.88 NRC as per ISO 354.To be installed with 15mm Aluminium profile conforms to Aluminium Alloy 6063-T 6.Temper As per BS:1474-1987 and G.I Lock in clips on the back of tongue and Groove system. The density per panel is 750-800 kg/m3.The panels come with tongue & groove for seamless patterns,4-28mm Groove and visible panel. These slats are made from acoustical fibreboard with linear perforations for excellent uniformity. The perpendicular holes are available on the back of panel which are covered by black acoustical fleece. Achieves sound reduction of 0.88 NRC. To be installed on G.I studs 600x600mm centre to centre 2400mm X 50mm web thickness 0.5mm, flanges 15 & 50mm fully knurled giving it high strength, hot dipped galvanized steel with 120GSM zinc coating specially designed for Acoustic vibration management and long life with a backing of HIMALYAN ACOUSTICS. 50mm thick,1000 GSM absorb wool tested as per Fire Retardant ASTMD 635-1991/Insulation and IS 15061-2002 for excellent results.