ABH 2400 C28 Flush Mount Magnetic Door Holder – Anodized AluminumABH 2400 C28 1 7 8 total projection from wall to face of door (2 7 8 when using 1 extension) Tri voltage unit 12V DC, 24V AC DC OR 120V AC Includes one complimentary 1 extension 35 lb. holding force All metal components No plastic parts Anodized aluminum finish UL ULC listed for smoke barrier or labeled fire doors Outlet box required (not provided) Armature features tow pivot points with 360 mobility Positive release button alleviates residual