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850 Series Engineering/Performance Data
14" and 16" Options * Field installable Bowtie Damper (BD) * HL OR - factory installed opposed radial damper (sizes 6"-14") * HL FR - U
listed Fire-Resistance Diffusers * TVB - Thermal Vapor Blanket * Square collar
Note: Sizes listed are the duct or opening size the grille will fit into
Options * MAR - Mounting Angle Ring (sold in pairs - 2 needed
Parallel Blade Volume Damper 3000P-64X38 Accessories 850 Series Engineering/Performance Datah3. Standard Features * 16 gauge galvanized channel frame * Parallel blades are cee 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. Options * 3000 PLL Low Leak Air Control
