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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18
* 3 hour rated * 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
Smoke Test and More Information on MA Series Diffusers
Center margins are mounted on the backside of the grille for a streamlined continuous look
One piece stamped steel frame on most common sizes
Parallel Volume Damper Low Leak 3000PLL-70X68 Commercial * 3 hour rated *h3. 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
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