What is the best commercial mortise lock?

The Schlage L9000 is the most widely specified. The Sargent 8200 has the highest cycle count at 14M+. The Corbin Russwin ML2000 is heavily specified on government projects. All are ANSI/BHMA Grade 1.

What is the difference between Grade 1 and Grade 2 locks?

Grade 1 locks are tested to 1,000,000+ cycles with higher impact resistance. Grade 2 are rated for 250,000 cycles. Grade 1 is standard for commercial exterior doors and high-traffic areas.

What is the best door lock for school classrooms?

The Schlage ND78 classroom security lock allows locking from inside without opening the door, meets ADA requirements, and maintains fire egress compliance.

What is the difference between Schlage ND and ALX?

ND is Grade 1 with 1M+ cycles and electrified options. ALX is Grade 2 with 250K cycles and modular chassis at lower cost. They share the same lever designs.

What is the most common commercial door closer?

The LCN 4040XP is the most widely specified surface-mounted commercial door closer in the US, covering sizes 1-6 and all three mounting types.

What locks are used in hospitals?

Grade 1 mortise locks on high-traffic doors, cylindrical locks on patient rooms, electronic access with audit trails on pharmacy and restricted areas.

How much cheaper is wholesale vs retail door hardware?

Wholesale pricing on commercial door hardware is typically 20-40% below manufacturer list price. Project quotes for large orders can be even lower.

Alarm Lock TRILOGY Exit/Panic Device PDLS1G/26DV99 fits Von Duprin 99 (Pin Code + Proximity Access)

$1,308.00

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Brand: Alarm Lock Trilogy
SKU:: PDLS1G/xxV99
Condition:: New
Model:: PDLS1G/xxV99
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$1,308.00

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Alarm Lock TRILOGY Exit/Panic Device PDLS1G/xxV99 fits Von Duprin 99 (Pin Code + Proximity Access)

NEW TRILOGY EXIT
ADD TRILOGY® CONVENIENCE & AUDIT TRAIL TO PANIC EXIT DEVICES FROM MOST MAJOR MANUFACTURERS
Compatible with: Von Duprin 99

	•	Fingertip and/or Windows Programmable
	•	2000 User Codes: Master, manager, supervisor and users
	•	Real Time Clock for up to 40,000 Event Time/Date-Stamped Audit Trail
	•	Up to 500 Lock/Unlock Schedules (with Time Zone Support)
	•	Rugged 12-Button Metal Keypad and Clutch Mechanism
	•	Weather-Resistant Performance
	•	Supports 6 or 7 pin IC rim cylinders
	•	Five Finishes; 2 ADA Leverset Styles Also available with Built-in Prox Reader for HID Card and PIN access control!