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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13
1/4” Wide x 1-27/32” High slots
Tool operated Opposed Blade Damper
inner dimension and outer dimension sizes available * Tamper proof screws * Standard Color
904 - Double Deflection Adjustable Aluminum Blade Grille For a 48" x 30" Duct Opening (front blades parallel to shortest dimension)
3-Way and 4-Way Air Patterns
4 1/4" Vertical Mount Fire Damper 2633-22X8 Residential Registers & Grilles 1/4” Wide x 1-27/32” Highh3. 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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