Aluminum ventilation grill 622L

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The weather protection grid, System 622L, from MLL Hamburg, is a ventilation grid made of aluminium with a free ventilation cross section of 62%. The system 622L is equipped with a Z-slat of the medium series of type 020L, which in turn is installed in enclosed Frame 602 by means of a proven clip technology. The slats fastened with the MLL clip system are also removable afterwards for repair work on on the facade or similar purposes. MLL-Ventilation grid type 622L MLL medium series, Z-slat MLL-Slat 020L in Frame 602 Surface : Anodised E6/EV1, C31-35 RAL according to choice / unfinished Special colors on request Scope : Weather protection grid from MLL for enclosed assembly, e.g.: Brickwork opening. Area of Application : For indoor and outdoor use. Struture : Pre-assembled for frame with bracket and slat Required Accessory : Fixture screws Fastening bracket Wall anchor Optional Accessory : Fly screen: Fibreglass mesh 1,4 mm / Stainless steel mesh 1,4 mm Bird protection: Galvanized mesh 10 mm / Stainless steel mesh 8 mm AssemblyEnclosed Grid dimension of the supporting pillar / max. span of the slat1000 mm Free ventilation cross-section62% Slat distance50 mm Loss coefficient exhaust air5,9 Flow coefficent exhaust air 0,40 Loss coefficient supply air6,7 Flow coefficent supply air 0,38 Lamella Slat 020L Variant Z-slat, free ventilation cross section 62%. Material Aluminium Al Mg Si 0.5 Holdfast Retainer 12.0 Variant Clip holder for slat facades and weather protection-/ventilation grids. Retainer 12.1 for weather protection/ventilation grids. Retainer 12.2 for slat facades. Material Aluminium Al Mg Si 0.5