Parallel Blade Volume Damper 3000P-68X22 past 12 months 57% free area * 1307:

57% free area * 1307: 13/16" lattice opening

52h * 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

425 Series Engineering/Performance Data

SUBMITTAL 2720 Series Submittal

Ceramic fiber blade installation with fiberglass cover*

Parallel Blade Volume Damper 3000P-68X22 past 12 months 57% free area * 1307: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