Parallel Volume Damper Low Leak 3000PLL-72X72 Smoke-Fire Damper Allows for 2-way airflow

Allows for 2-way airflow

Available 6

blade to blade neoprene seals

904 - Double Deflection Adjustable Aluminum Blade Grille For a 20" x 20" Duct Opening (front blades parallel to shortest dimension)

SD52 - Transition Box Spiral Pipe Grille (Single Deflection)

Parallel Volume Damper Low Leak 3000PLL-72X72 Smoke-Fire Damper Allows for 2-way airflowh3. 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