| Narrow-Stile Aluminum Storefront | Retail shops, medical suites, and lobby glass entrances. | Hookbolt misses frame slot, paddle sticks, or mortise cylinder spins. | Check pivot sag, backset (31/32", 1-1/8", or 1-1/2"), cam type, and strike clearance. |
| Heavy-Duty Cylindrical / Mortise Lever | Office corridors, suite entries, restrooms, and mechanical rooms. | Sagging return spring, loose rose/spindle, or latch failing to retract. | Verify ANSI/BHMA Grade 1 or 2 duty, classroom vs. storeroom function, and handing. |
| Rim & Vertical-Rod Panic Exit Bars | Designated exit doors, warehouses, assembly rooms, and rear steel doors. | Push pad drags, top/bottom latch rods bind, or door fails to relatch. | Preserve single-motion interior egress; align roller strikes and overhead closer latch speed. |
| Electric Strike & Credentialed Entry | Employee entrances, multi-tenant lobbies, and server/supply rooms. | Buzzer/solenoid clicks without releasing latch, or door stays unlocked. | Confirm 12V/24V DC/AC supply, fail-secure vs. fail-safe mode, and mechanical backup key. |