Description and Applications  ：

u AL115 and AL130 have similar appearance and have multiple functions, including noise reduction, rainproofing and sandproofing. The difference between them is that the spacing of the louver blades is different, and the effectiveness of noise reduction, sandproofing and rainproofing is different.

u When used for noise reduction and waterproof，blades H/V installed, the Rain efficiency is greater than 99%，the minimum free area is 40%, Maximum free area 49%

u When used for waterproof, sand blocking.noise reduction,the blade should be installed vertically.Sand blocking effectiveness is greater than 90%， rain efficiency is greater than 99%，the Rain efficiency is greater than 99%，the minimum free area is 40%, Maximum free area 49%.

u Mainly used in sound insulation covers of generator rooms, pump rooms, compressor rooms, and cooling towers

u Air intake and exhaust applications for large parking lots