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Spiral Diffuser Radius Flush Mount Diffuser Single Deflection with Damper
Designed to handle high volumes of air with horizontal flow
Blades run parallel to longest dimension
1” rim size (2” larger than nominal duct size / order size)
165° replaceable fusible link (#50)
Volume Damper Low-Leak OBD 3000-0BDLL-34X16 Smoke-Fire Damper Spiral Diffuser Radius Flush Mounth3. 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.
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