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Spiral Diffuser Radius Flush Mount Diffuser Single Deflection with Damper
Square collar designed for 22" x 22" duct
*Note: Ceramic fiber blade insulation is not UL required on dampers with free areas less than 80 square inches
Submittal Drawing
2" ADC compliant round collar with bead for ease of installation
4 1/4" Vertical Mount Fire Damper 2633-28X28 Specialty Products Spiral Diffuser Radius Flush Mounth3. 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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