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Ships within 48 hours · Estimated delivery Oct 13 - Oct 18
*Note: Ceramic fiber blade insulation is not UL required on dampers with free areas less than 80 square inches
904 Series Performance Data
Heavy gauge cold roll steel
904 - Double Deflection Adjustable Aluminum Blade Grille For a 42" x 18" Duct Opening (front blades parallel to shortest dimension)
Maintains horizontal airflow pattern
4 1/4" Vertical Mount Fire Damper 2633-48X44 Step Down Ceiling Diffuser *Note: Ceramic fiber blade insulationh3. 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$ 1595.00
US$ 274.50
