Opposed Blade Volume Damper 3000-0BD-50X28 Step Down Ceiling Diffuser T-Bar Fixed Core Step Down

T-Bar Fixed Core Step Down Diffuser

Standard Features

Blades run parallel to longest dimension

Allows for 2-way airflow

700 CB20 - two way

Opposed Blade Volume Damper 3000-0BD-50X28 Step Down Ceiling Diffuser T-Bar Fixed Core Step Downh3. 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.