Parallel Blade Volume Damper 3000P-66X44 Commercial * UL and California State

* UL and California State Fire Marshall approved * 4-1/4" standard frame style * Interlocking steel roll-formed blade (3) with roll-formed frames (1) * Blade lock (5) * Damper manufactured from corrosion tested galvanized mild steel (G-90) * Self locking corner (4) * 165° replaceable fusible link (2) h3

UL listed and tested in accordance with UL Standard 555C

Adjustable steel roll formed blades oriented for 1 or 2 way airflow pattern

SD52 Series Performance Data

Parallel Blade Volume Damper 3000P-66X44 Commercial * UL and California Stateh3. 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