The Rixson 900-689 Door Holder Armature Extension is designed to increase the distance between the armature and door surface by 1-1/2", allowing proper alignment in electromagnetic door holder systems. This base unit provides a stable mounting platform for achieving consistent contact between the armature and magnet assembly.
Manufactured by Rixson, an ASSA ABLOY brand, this armature extension is commonly used as a foundation when additional spacing is required. It is essential for installations that require multiple extension components and ensures optimal performance in fire and life safety door applications.