Parallel Blade Volume Damper 3000P-32X28 Step Down Ceiling Diffuser Free area equals more than

Free area equals more than 75% of nominal size

Standard Features * 1/2" spacing dual angular louvers * 22 & 20 gauge cold roll steel * Hand operated lever for easy filter access * Holds up to 2" thick standard filter (not included) * Removable face for easy cleaning and maintenance * Filter door hinges parallel to longest side * 4-way reversible door on square sizes * 2-way reversible door on rectangular sizes * Filter retention tabs * Concealed mounting holes * Soft White Options * SPFG-4 - holds 4" deep air filter * Standard Color

Louvers will be Parallel to the First Dimension

Standard Features * Universal Collars for T-bar supply and returns * Soft White Finish * Available for 6" to 14" round duct in 1" increments

Spiral pipe diameter must be 4” larger than Height of the duct opening

Parallel Blade Volume Damper 3000P-32X28 Step Down Ceiling Diffuser Free area equals more thanh3. 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