Parallel Blade Volume Damper 3000P-18X12 Step Down Ceiling Diffuser Retainer cables are provided on

Retainer cables are provided on sizes 12" and larger to allow the inner cones to hang securely while adjusting the diffuser

Standard Features * Aluminum fixed bar blade return air T-bar lay-in filter grille * Square collar for 20 1/2" x 20 1/2" duct * Hinged removable face * 20" x 20" x 1" filter (not included) * Seismic support holes * Soft White Options * 915 2 TFG - 2" filter spacing (filter not included) * No Labor Collar - square to round (2x2 only) * 1x2 (20x8 filter) or 2x4 (20x44 filter) * Satin Anodized Finish available on this product

One-piece removable slide damper for off-season closure

Standard Features * Stamped 22 gauge steel curved blade T-Bar lay-in supply diffuser * Field adjustable * Five air patterns: 101 - one way

Aluminum 3 cone T-Bar diffuser with a fixed face

Parallel Blade Volume Damper 3000P-18X12 Step Down Ceiling Diffuser Retainer cables are provided onh3. 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