ML9453 Heavy Duty Commercial Mortise Lock – Dormitory/Exit
The ML9453 is engineered for high-traffic environments that require both security and safe emergency egress, meeting the ANSI/BHMA A156.13 Series 1000 Grade 1 standard for maximum durability. Constructed with a heavy gauge plated steel lock case and stainless steel latch, guard bolt, and armored front, this lock is built to withstand years of use in demanding commercial or institutional settings.
This Dormitory/Exit function allows the latch bolt to be operated by a lever from either side. The outside lever can be locked by a key from the outside or by an inside turn button, but turning the inside lever always retracts both the latch and the deadbolt for immediate exit in an emergency.
Key Features:
Function: Dormitory/Exit – latch bolt operated by lever from either side; outside lever locks via key or inside turn button; turning inside lever always retracts latch and deadbolt for egress
Duty Rating: ANSI/BHMA Grade 1 – highest durability rating
Construction: Heavy gauge plated steel lock case with stainless steel latch, guard bolt, and armored front
Deadbolt: 1" stainless steel with hardened anti-saw pins (when applicable)
Latch Bolt: Stainless steel with anti-friction insert for smooth operation
Guard Bolt: Stainless steel for added security
Door Thickness: 1-3/4" standard (other thicknesses available upon request)
Backset: 2-3/4" standard
Strike: Stainless steel or brass ANSI curved lip (4-7/8" x 1-1/4")
Keyway: Stock 6-pin Schlage “C” keyway (other keyways available)
Handing: Non-handed, reversible in the field
UL Listed: 3-hour fire-rated for single doors and pairs
Options:
Trim Styles: 06, 17, 03 (specify “A” for sectional trim)
Finishes: Escutcheon – US26D, 10B; Sectional – US26D, 10B, 26
Certifications & Compliance:
UL10C & UBC 7.2 Positive Pressure Listed
ANSI A117.1 ADA Barrier-Free Accessibility
C-UBC California Uniform Builders Code – 2001
NFPA-80 (1999) & NFPA-101 Life Safety (2000)