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Rugged metal door louvers from Grainger help keep air moving and still maintain privacy and security when doors are closed. Retrofit them to your own doors or use as original equipment in 1-3/8" to 2-1/4" thick wood or metal doors. Inverted V-style blades angle 45°. Choose from clear finish aluminum and gray painted steel. Each door louver includes a set of installation screws. Get door louvers from Grainger to help improve office ventilation.