2" Vertical Mount Fire Damper 2501-36X12 Specialty Products One-piece removable slide damper for

One-piece removable slide damper for off-season closure

Nylon bushings on adjustable blades prevent metal on metal rattle

Adjustable blades oriented for 3 or 4-way air flow pattern

3/4" round collar

2" Vertical Mount Fire Damper 2501-36X12 Specialty Products One-piece removable slide damper forh3. 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