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Ships within 48 hours · Estimated delivery Aug 19 - Aug 24
Spiral pipe diameter must be 4” larger than Height of the duct opening
Ceiling opening must be 4” larger in length and width than the nominal duct size
Surface mount fixed blade grille with airfoil blades at 0°
3-Way and 4-Way Air Patterns
Parallel Blade Volume Damper 3000P-58X14 Smoke-Fire Damper Spiral pipe diameter must beh3. 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
