Opposed Blade Volume Damper 3000-0BD-24X16 Smoke-Fire Damper listed Fire-Resistance Diffusers * TVB

listed Fire-Resistance Diffusers * TVB - Thermal Vapor Blanket * Square collar

904 - Double Deflection Adjustable Aluminum Blade Grille For a 48" x 30" Duct Opening (front blades parallel to shortest dimension)

120x120 multiple

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

MRI Compatible

Opposed Blade Volume Damper 3000-0BD-24X16 Smoke-Fire Damper listed Fire-Resistance Diffusers * TVBh3. Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee 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.