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Ships within 48 hours · Estimated delivery Aug 27 - Sep 1
Blades are parallel to the shortest dimension
Diffuser available in sizes 6×6 through 20×20
CB30 - three way
RS52 Series Engineering/Performance Data
2" ADC compliant round collar with bead for ease of installation (square sizes only)
2" Round Vertical Mount Fire Damper 2549-40 Residential Registers & Grilles Blades are parallel to theh3. Standard Features * 1 1 2 hour rated fire damper * 2549 Round damper for vertical mount only. Available 4" thru 40" round. * 2550 Round Spring actuated (6) damper for vertical or horizontal mount. Available 4" thru 28" round. * 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
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