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Frequently Asked Questions

What is a mortise electric strike?

A mortise electric strike is an electronic release designed to work with mortise locks, which often combine a latchbolt and deadbolt. Unlike cylindrical strikes, mortise strikes handle larger, multi-function lock bodies. At National Lock Supply, we stock Grade 1 mortise strikes tested for heavy-duty use.

How do they compare to cylindrical strikes?

Cylindrical strikes are designed for simple latch locks, while mortise strikes are made for complex mortise locksets, offering stronger construction and additional security features. Installation is more demanding since mortise strikes require deeper cutouts.

What door prep is required?

Mortise strikes require a deeper and wider frame cutout than cylindrical strikes, accommodating the larger mortise lock body.

Are they fail-safe or fail-secure?

Both versions exist. Fail-safe strikes unlock on power loss, while fail-secure models remain locked during outages.

Where are mortise strikes commonly used?

In government buildings, hospitals, and universities, where mortise locks are standard and higher security is required.

Are mortise strikes UL certified?

Yes. Many are UL-rated for fire door applications, making them compliant with NFPA and IBC codes.

Are mortise strikes ADA compliant?

Yes, especially when paired with lever-operated trims that meet ADA standards for accessibility.

What finishes are available?

Stainless Steel and Dark Bronze are the most common finishes, designed to match commercial hardware.

Can mortise strikes integrate with panic devices?

Yes. Some models are designed to accept mortise exit devices, providing secure integration with egress hardware.

Why buy mortise strikes from National Lock Supply?

We stock Grade 1 mortise strikes built for durability, with expert support to ensure compatibility and integration with your door hardware.