Air diffuser Feature: 1)aluminum alloy material. 2) the vane angle will be 30íp; 3) air register1-4 directions, square or rectangular for choice. 4) can add obd or fliter as your requirement. 5)easy installation and maintenance 6) natural anodized aluminum finish or powder coated Outer standard size: as per your request(face size=neck size+127mm) Neck size: a*b(size is as per your request) Vane space:25~35mm Height:50mm Flange width: 62mm Order notes: item-neck size aíßb-color/(obd/filter or not) Functions: mutil-angle for air supply or return Use: for floor, ceiling, wall, sidewall, door, air conditioner application, in broadcast room, hospital, theater, guest room Packing:normal packing (each diffuser packed with a piece of wrapper, and then put into the carton separated with a cardboard) Models Hfk-ls1a~4a
