Volume Damper Low-Leak OBD 3000-0BDLL-58X58 past 12 months 2" thin-line roll formed out-of-airstream

2" thin-line roll formed out-of-airstream frame

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

back blades parallel to the shortest dimension Extruded aluminum surface mount frame with signature line marks Provides 4-way air flow on one plane Nylon bushings on adj

SD34 Submittal Drawing

Smoke Test and More Information on MA Series Diffusers

Volume Damper Low-Leak OBD 3000-0BDLL-58X58 past 12 months 2" thin-line roll formed out-of-airstreamh3. 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.