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UL listed and tested in accordance with UL Standard 555
904 - Double Deflection Adjustable Aluminum Blade Grille for a 48" x 18" Duct Opening (front blades parallel to shortest dimension)
2550 Series Engineering/Performance Data
three or four diffusers per panel * Countersunk sunk screwholes for ceiling mount * Standard Color or Designer Color Finish available on this product
Spiral pipe diameter must be 4” larger than Height of the duct opening
4" Horizontal/Vertical Mount Fire Damper 2634-48X22 Step Down Ceiling Diffuser UL listed and tested inh3. 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
US$ 128.00
US$ 128.00
US$ 128.00
US$ 128.00
US$ 57.80
US$ 128.00
