Door Louver, Material Steel, Opening Height 18 In., Opening Width 24 In. The NGP "no vision" door louver provides up to 70% air flow when installed in metal or wood doors. Made from 20-ga. cold-rolled steel frame, the louver features mitered and welded corners with welded reinforcing clips at the corners. 24-ga. steel blades have hemmed edges. The inverted "V" design includes countersunk mounting screw holes. Gray primer powder-coat finish.
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