Transit time is determined by shipping method and destination. Most orders will ship via FedEx or UPS Ground. If an item is out of stock or will require significant lead time we will contact you. Same-Day shipping cutoff time is 12:00 pm EST. Please see our Shipping Info page for more details. You can also CHAT WITH US to determine Shipping Estimates for your specific Items
All SEM series magnets are UL listed for smoke barrier or labeled fire doors.
Tested and certified under ANSI Standard A156.15. heavy duty, electrically controlled door holding magnets. Magnets are fail safe and hold until the current is interrupted. A manual door closer is used to control and close the door.
SEM 7840 Magnet Features:
Tri-voltage design with 35lbs. of holding force
Low profile recessed wall-mounted
Now available armature extensions from LCN
SEM 7840 magnets are shipped with die cast housing, cover, armature and WMS screw pack
See more about LCN SEM7840 Electromagnetic Door Holder/Release - Low Profile Recessed Wall Mount, Aluminum here