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Ships within 48 hours · Estimated delivery Oct 26 - Oct 31
53% free area * 1306: 3/4" lattice opening
904 - Double Deflection Adjustable Aluminum Blade Grille For a 18" x 12" Duct Opening (front blades parallel to shortest dimension)
1/2" spacing dual angular louvers
4-Way ceiling register with stiffened 1/2" fan shaped louvers for silent operation
60% free area * Soft White Options * Countersunk screwholes with matching Phillips #8 x 1-1/2" oval Screws * 10 or 12 gauge steel * Tamper proof screws
Parallel Volume Damper Low Leak 3000PLL-50X42 Commercial 53% free area * 1306:h3. Standard Features * 16 gauge galvanized channel frame * Parallel blades are cee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non metallic celcon bushings * 1 2" square zinc plated steel pivot pins * 1 2" square zinc plated steel adjustable operating shaft extending up to 4" beyond the air control frame * Single blades on dampers with a height of 12" or less * Mill finish h3. Options * 3000 PLL Low Leak Air Control
