Air Louvers Fire-Rated Door Louver 1900A Adjustable Z-Blade Self-Attach 24" X 12" Bronze 1900A 2412B

Adjustable z-blade louver with fusible link activated at 165 degrees f is ideal for use in fire doors up to 1-1/2 hour rating. The self-attaching frame style is ideal for installation in existing door cutouts. Material 16 gauge crs frame and louver blades. Min size 10" x 6" max 24" x 24". Construction louver z-blade louver is riveted to the operating bar and frame at 1" intervals to welded 1-9/16" deep frame. Mechanical stop holds blades open. Frame mitered and welded corners screws fastened through prepared frame into louver core leaving corridor side of frame free of fasteners. Operation adjustable blades of 16 gauge crs pivot on cadmium-plated steel rivets. The blades are operated by a manual adjusting lever. A spring loaded fusible link mechanism is incorporated into the design; upon melting of the link the action bar is actuated thereby closing and locking all of the blades.

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