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Louvers > Combination Louver/Damper


4" Deep Aluminum Combination Louver/Backdraft Damper

LBD-4E Product Image

The Models LBD-4E & LBD-4I are weather louvers designed to protect the outside opening in building exterior walls. The LBD-4E may be used for exhaust air while the LBD-4I is designed for ducted intake air applications. Both models incorporate drainable blades and downspouts jamb and gutter design for high performance.