Mortise Frame Lock

In commercial and public buildings, dependable door hardware is essential for safe passage and long-term operation. DIROCK narrow mortise locks — also known as mortise frame locks — are engineered specifically for aluminum and narrow stile doors, delivering proven performance in commercial environments.

Our compact narrow mortise lock series features a slim body profile and a reversible latch for flexible installation. Manufactured in full compliance with EN 12209 standard, these locks maintain stable performance and reliable operation even under high-frequency daily use in offices, retail spaces, hotels, and public facilities.

We supply multiple narrow backset mortise lock configurations tailored to project specifications. Choose from standard latch or roller latch versions, with center distances of 92mm and 85mm, and backsets of 30mm, 35mm, and 40mm. All models are compatible with standard euro profile cylinders and complementary door hardware, making them ideal for wholesale procurement, OEM supply, and customized architectural projects.

Key features of DIROCK narrow mortise lock

• Narrow-stile design: Slim lock body fits seamlessly into aluminum narrow stile door structures without compromising strength or security.

• Certified safety: Tested to EN 12209, ensuring reliable performance and regulatory compliance in commercial applications.

• Flexible configuration: Reversible latch suits left or right-hand doors; multiple backsets (30/35/40mm) adapt to various door systems and regional installation standards.

• Durable construction: Core components in 304 stainless steel and Zamak 5 (ZnNi plating) deliver corrosion resistance and extended service life under continuous operation.

FAQ

Q1. What backset options are available for your narrow mortise locks?

DIROCK narrow mortise door locks offer multiple backset options — 30mm, 35mm, and 40mm. They flexibly fit most narrow stile door profiles and satisfy the dimensional requirements of various commercial and public building projects.

Q2. What functional versions are available?

We supply two primary narrow stile mortise lock types: a standard latch version and a roller latch version. The standard latch is cost-effective, durable, and widely used across commercial projects. The roller latch version ensures smoother, quieter door operation, making it ideal for hotels, offices, and other noise-sensitive environments.

Q3. Which building types are these narrow mortise locks suitable for?

These locks are designed for Category of Use Grade 2 (medium-traffic areas where occasional misuse may occur). Typical applications include offices, street-front retail shops, small stores, hotels, and other commercial and public buildings requiring dependable door hardware.

Q4. Are your narrow mortise locks compatible with standard handles, lock cylinders and accessories?

Yes. All DIROCK narrow mortise locks are designed to work with standard euro lever handles, profile cylinders, and complementary door hardware, simplifying procurement and ensuring seamless integration into existing door systems.

For further inquiries, please contact us: biz@dirock.com