A technical overview of the Adams Rite 91-0813-02-P frame kit used with 8400-series mortise exit-device strike preparation. The video reviews the kit components, the 8400 latch/strike centerline relationship, frame preparation, fastening and final functional checks.
Adams Rite describes the 8400 as a heavy-duty, deadlatching mortise exit device for narrow-stile aluminum applications. Its installation sheet requires the strike cup and strike plate to be installed properly to meet code requirements and places the strike centerline within 1/64 inch of the deadlatch centerline. The supplied Major HIT-40AR3 guide is reviewed only as a related jamb-preparation/template reference—not misidentified as an Adams Rite 91-0813 factory instruction.
Technical references:
Architectural Builders Supply •
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