4 inch motorized duct damper
[DOC File]SECTION 15821
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4. Damper: Opposed blade, constructed of steel, adjustable thru face with removable key. USE SUBPARAGRAPH BELOW WHEN DUCTWORK PENETRATES CELL SECURITY WALLS, AND WHEN ANY DUCT DIMENSION IS OVER 6 INCHES. INSTALL SECURITY BARS ON 4 INCH CENTERS. IF DUCT HEIGHT IS OVER 12 INCHES PROVIDE HORIZONTAL SECURITY BARS IN DUCTWORK SO 5 INCH …
[DOC File]SECTION 15820 - DUCT ACCESSORIES
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Include elevated platform for insulated duct mounting. MOTORIZED VOLUME DAMPERS. Dampers: AMCA-rated, opposed-blade design; 2.8 -mm minimum, galvanized-steel frames with holes for duct mounting; damper …
[DOCX File]23 33 00 - DOA Home
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If so then consider enlarging the duct at the damper location. Use airfoil shaped damper blades on the following system: ... Install double wall, airfoil, 4-1/2 inch radius vanes in ducts with vane runner length 18" or greater and air velocity 2000 fpm or greater. ... fans, or other motorized …
[DOCX File]ARCAT | Free Building Product CAD Details, BIM, Specs and …
https://info.5y1.org/4-inch-motorized-duct-damper_1_5e3020.html
OH-40-57: 20 feet long by 4 inch diameter neoprene rubber hose, OHC-40 overhead duct coupler, ES- 40 energy saving damper, HF-577 rubber tailpipe adapter. OH-40-L57: 20 feet long by 4 inch neoprene rubber hose, OHC-40 overhead duct …
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