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Nylon bushings on adjustable blades to prevent metal on metal rattle
RD Series Submittal
listed Fire-Resistance Diffuser * TVB - Thermal Vapor Blanket * Square Collar
904 - Double Deflection Adjustable Aluminum Blade Grille For a 48" x 8" Duct Opening (front blades parallel to shortest dimension)
Long throw individually adjustable blades with 1 1/2" blades on 1 1/2" centers or 3" blades on 3" centers
2" Horizontal/Vertical Mount Fire Damper 2534-10X8 Step Down Ceiling Diffuser Nylon bushings on adjustable bladesh3. Standard Features * 2533 Square or rectangular for vertical mount only. Maximum dimension 48w, 41h. * 2534 Square or rectangular spring actuated (6) for horizontal or vertical mount. Maximum dimension 41w, 29h. * UL and California State Fire Marshall approved * 2" thinline frame * Interlocking steel roll formed blade (3) with roll formed frames (1) * Blade lock (5) * Damper manufactured from corrosion tested galvanized mild steel (G 90) * Self
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