4 1/4" Horizontal/Vertical Mount Fire Damper 2602-18X18 Smoke-Fire Damper Standard Features * 2561 -

Standard Features * 2561 - Square or rectangular fire door for vertical mount only

inner dimension and outside dimension available * Available in continuous lengths with butt joints * Tamper proof screws * Standard Color

Standard Features * 2633 - Square or rectangular out-of-airstream fire damper for vertical mount only

Standard Features * Lightweight Aluminum vent louver * Able to withstand wet and corrosive environments * Spring clip mounting * Easily installed using only a high grade silicon caulk * Satin Anodized finish Options * IS - Insect screen * Standard Color or Designer Color Finish available on this product

Performance Data With Opposed Blade Damper

4 1/4" Horizontal/Vertical Mount Fire Damper 2602-18X18 Smoke-Fire Damper Standard Features * 2561 -h3. Standard Features * 2601 Square or rectangular for vertical mount only. Maximum dimension 60x60 single, 120x120 multiple. * 2602 Square or rectangular spring actuated (6) for horizontal or vertical mount. Maximum dimension 60x60. * UL and California State Fire Marshall approved * 4 1 4" standard frame style * Interlocking steel roll formed blade (3) with roll formed frames (1) * Blade lock (5) * Damper manufactured from corrosion tested galvanized