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Square collar designed for 20” × 20” duct
450 Series Engineering/Performance Data
032 Aluminum construction * Tamper proof screws * Standard Color
w/ Lever Operated Opposed Blade Damper
Submittals and Performance Data
2" Horizontal/Vertical Mount Curtain Fire Damper 2502-36X28 Smoke-Fire Damper Square collar designed for 20”h3. Standard Features * 2501 Square or rectangular for vertical mount only. Maximum dimension 48w, 49h. * 2502 Square or rectangular spring actuated (6) for horizontal or vertical mount. Maximum dimension 41w, 36h. * 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 90) * Self
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