Grilles GWN(Zn) are used for supply and removal of air in supply and exhaust ventilation, designed for installation in ducts or building openings of premises of different values. GWN(Zn) grilles are made of galvanised steel. The advantage is low cost and extremely presentable appearance. The grille is a frame with fixed louvres installed in it, which prevent the penetration of precipitation from the street. By default, the grille is manufactured with mounting holes for screw connection. The grilles can be supplied with an adapter for lateral or axial connection of round and rectangular ducts. Note Grilles can be manufactured from galvanised, stainless steel or cold rolled steel on customer's request. Standard coating colour - white RAL 9016 is not specified when ordering (painting in any other colour according to RAL colour catalogue is possible). The minimum size of the grille is 100×100. Grilles with fixed louvres GRD-K GRD-K grilles are designed for air supply and removal by ventilation and air conditioning systems in premises of any purpose. They consist of a rectangular frame with fixed horizontal louvres installed in it. Easy and reliable wall mounting to the air ducts is ensured by spring clips installed on the side walls of the grille. Ceiling mounting is recommended using self-tapping screws. For convenience of installation the grilles can be additionally equipped with a mounting frame. Grilles are powder sprayed in white colour (RAL 9016). For custom-made products, painting in any RAL colour or texturing is possible. Minimum grille size 100 x 100 mm, maximum 1200 mm on one side, pitch 50 mm, customised grilles with non-standard pitch are also possible.