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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18
Allows for 2-way airflow
Allows for 2-way airflow adjustment
Options * Sleeve variations * 304 stainless steel construction * Fractional and odd sizes available h3
* 3 hour rated * 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 mild steel (G-90) * Self locking corner (4) * 165° replaceable fusible link (2) h3
Airfoil blades individually adjustable on 3/4" centers
4" Horizontal/Vertical Mount Fire Damper 2634-48X18 past 12 months Allows for 2-way airflowh3. 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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