Siemens SDH-2D

DescriptionThe Siemens Model SDH-2 Series fire-door holder is for use with self-closing, swinging, fire and smoke-barrier doors. Each unit, which uses concealed wiring, includes an electromagnet assembly encased in an attractive housing, extended-door armature assembly, door plate, and outlet-box bracket. Total projection of the unit is 3??, including armature assembly and magnet. The magnet has a holding force of approximately 25 lbs. Model SDH-2D is rated at 24VDC.