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NGD - Narrow ceiling grid dimples for 9/16" T-Rails
Heavy Duty Construction (1 1/2" frame depth utilized)
Standard Features * 4000 - door core grille with single frame * 4100 - door core grille with additional loose frame *
904 Series Submittal
smooth style * 360 air diffusion * Excellent for variable air volume applications * Hinged-down core for easy access * No Labor Collar * Seismic support hangers * Available sizes: 6"-10"
4" Horizontal/Vertical Mount Fire Damper 2634-40X40 Accessories NGD - Narrow ceiling gridh3. Standard Features * 2633 Square or rectangular out of airstream fire damper for vertical mount only. * 2634 Square or rectangular Spring actuated (6) out of airstream fire damper for horizontal or vertical mount. * UL and California State Fire Marshall approved * 4 1 4" standard frame style * Maximum dimension 60w, 52h * Interlocking steel roll formed blade (3) with roll formed frames (1) * Blade lock (5) * Damper manufactured from corrosion
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