Volume Damper Low-Leak OBD 3000-0BDLL-26X24 past 12 months 850 Series Engineering/Performance Data

850 Series Engineering/Performance Data

Accessory to the 90 Series

* UL and California State Fire Marshall approved * 4-1/4" standard frame style * Maximum dimension 60w

2500/2600 Installation Instructions

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

Volume Damper Low-Leak OBD 3000-0BDLL-26X24 past 12 months 850 Series Engineering/Performance Datah3. 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.