Cover to convert 533 magnets for surface mounting.

When used in conjunction with a suitable door-closing device, fire alarm and detection system, the Briton electromagnetic hold-open devices permit fire doors to be held open during normal operation. In the event of a fire or smoke detection, the units are automatically de-activated and the doors will close under the normal action of the door closer.

Briton Fire Door Closers | Briton Exit Devices | Briton Locks