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Countersunk mounting holes with color matching Philips Pozidriv screws
Blades are parallel to the shortest dimension
Perforated face grille
Reinforced welded core and extra supports for heavy duty application
2x4 T-Bar (22" x 46" duct)
Parallel Blade Volume Damper 3000P-52X38 Commercial Countersunk mounting holes with colorh3. 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
