Sound absorbing Transfer Grilles INDUSILENT for surface flush installation in wall constructions with fitting depths of 100 and/or 125 mm. Low pressure loss and high sound attenuation value. Suitable for volume flow rates up to 140 m³/hm. High sound attenuation value over entire frequency band. Tested by Fraunhofer-Institute. Air diffuser comprising: - Transfer grille made of galvanized sheet steel with highly effective sound proof, abrasion resistant inner lining of incombustible building materials. The lining has the building material class A2 according to DIN 4102 and is fibre-free because of ull lamination. - Deco-frame made of galvanized sheet steel with round or square hole. Surface is painted in RAL 9010. Mounting by clipping into the overflow element (only for type TR, SR) - Dust protection by preventing soiling during the design phase according to VDI 6022. Type: ~ TR 230 ~ TR 340(with Deco-frame) ~ TG 230 ~ TG 340 ~ SR 300(with Deco-frame) ~ SG 300 Nominal length: ~ 500 mm ~ 800 mm ~ 1000 mm ~ 1200 mm Hole pattern of Deco-frame (only for type TR, SR): ~ Square hole Qg 8-10 ~ Round hole Rv 5-6 Accessories: ~ Cover frame (only with type SG and type TG) ~ Neck extension ~ TR….SR – Usage R1 ~ TR..SR – Usage R2 ~ TG..SG – Usage G3 Manufacturer: Maschinenfabrik Gg. Kiefer GmbH Series: Sound absorbing Transfer Grilles Type: INDUSILENT Sound absorbing Transfer Grilles INDUSILENT TS in narrow type for installation in system partition walls and constructions available with small fitting depth. Low pressure loss and high level of sound attenuation. Suitable for volume flow rates up to 140 m³/hm. High sound attenuation value over entire frequency band. Tested by Fraunhofer-Institute. Air diffuser comprising: - Transfer grille made of galvanized sheet steel with highly effective sound proof, abrasion resistant inner lining of incombustible building materials. The lining has the building material class A2 according to DIN 4102 and is fibre-free because of ull lamination. - Dust protection by preventing soiling during the design phase according to VDI 6022. Type: ~TS 230 ~ TS 340 Nominal length Ln: ~ 500 mm ~ 800 mm ~ 1000 mm ~ 1200 mm Manufacturer: Maschinenfabrik Gg. Kiefer GmbH Series: Sound absorbing Transfer Grilles Type: INDUSILENT TS