Parallel Blade Volume Damper 3000P-24X22 Residential Registers & Grilles 2" ADC compliant round collar

2" ADC compliant round collar with bead for ease of installation

Standard Features *

904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 4" Duct Opening  (front blades parallel to shortest dimension)

Steel multi-shutter damper

Parallel Blade Volume Damper 3000P-24X22 Residential Registers & Grilles 2" ADC compliant round collarh3. 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