Door Plate Assembly 04390-99 Two-Piece Keeper Plate

The 04390-99 is a spare door keeper plate for electromagnetic fire door holders, supplied as a two-piece plate that mounts on the door leaf. It replaces the keeper originally fitted to the door-mounted side of a magnet door holder, giving a like-for-like part where the existing keeper has worn or been damaged.

The plate appears in the door-holder order codes alongside the transformer-rectifier power supplies, the magnet door holders and the floor-mounting plate that make up the wider holding system. It suits the magnet door holders that are each supplied with a keeper of this type, so it serves as the matching spare for those units. For any physical connection details, consult the installation manual.

Being a mechanical interface only, it carries no electrical parts and needs no calibration once fitted. Correct positioning against the magnet face is the main requirement, so alignment should be checked before it is finally secured.