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115T Series Engineering/Performance Data
Nylon bushings on adjustable blades prevent metal on metal rattle
Hand operated lever for easy filter access and cleaning
Adjustable baffle controllers to direct airflow horizontally or vertically
904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 4" Duct Opening (front blades parallel to shortest dimension)
Backdraft Vertical Mount 3550-16X44 Commercial 115T Series Engineering/Performance Datah3. Standard Features * 3550 Vertical mount * 3560 Horizontal mount air up * 3570 Horizontal mount air down * 3580 Round sizes available 5" to 24" * All non motorized backdraft dampers * Dampers are opened by air pressure differential and closed by gravity * 16 gauge channel frame with 26 gauge galvanized blades * Out of airstream linkage * Blades are vee stiffened 26 gauge for strength and stability * Square steel pivot pins * Nylon bushings * Single
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