Volume Damper Low-Leak OBD 3000-0BDLL-54X26 Step Down Ceiling Diffuser Tamper Proof Screws - stainless

Tamper Proof Screws - stainless steel TORX Center Pin

904 - Double Deflection Adjustable Aluminum Blade Grille for a 16" x 8" Duct Opening   (front blades parallel to shortest dimension)

with 60% free area

Directional volume diffuser with 4-way removable core

Volume Damper Low-Leak OBD 3000-0BDLL-54X26 Step Down Ceiling Diffuser Tamper Proof Screws - stainlessh3. 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.