Parallel Blade Volume Damper 3000P-30X14 Smoke-Fire Damper Standard Features * Gang-operated opposed

Standard Features * Gang-operated opposed blade radial volume control damper for use with RD Series Round Diffusers * Available in 2" increments from 6"-24"

3 hour fire resistance rating

Long throw individually adjustable blades with 1 1/2" blades on 1 1/2" centers or 3" blades on 3" centers

Individually welded 14 guage diffusion bars

For damper free area chart A click here * 2563 - Out-of-Airstream fire door

Parallel Blade Volume Damper 3000P-30X14 Smoke-Fire Damper Standard Features * Gang-operated opposedh3. 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