OBI K3 Mortise Lock DIN 18251 Class 3 Left-Handed Satin Stainless Steel 72/55/20 mm

Product Overview

The OBI K3 Mortise Lock (left-handed, 72/55/20 mm, satin stainless steel) serves as a mechanical locking mechanism for both exterior and interior doors. Designed for use in residential and commercial settings, this lock meets the requirements of DIN 18251, ensuring standardized fit and reliable mechanical performance.

A key feature of this lock is its latch equipped with Teflon elements, which significantly reduces noise when doors are closed. This detail streamlines project delivery in environments where acoustic comfort is required, preventing tenant complaints and post-installation modifications. The OBI K3 is particularly suited for procurement in office buildings, multi-family residential complexes, and other projects where minimal closing noise is a requirement.

Key Features

• Teflon-coated latch ? reduces noise during door closing for improved user comfort


• DIN 18251 compliance ? standard fitting for professional door hardware installations


• 72/55/20 mm lock case size ? suitable for common European door profiles


• Class 3 mechanical rating ? offers enhanced security for residential and commercial use


• Left-handed (WB LEWY) ? designed specifically for left-opening doors


• Satin stainless steel finish ? provides corrosion resistance and modern appearance

Technical Specifications

• Lock Type: Mortise


• Lock Size: 72/55/20 mm


• Handing: Left (WB LEWY)


• Material: Satin stainless steel


• Standard: DIN 18251


• Mechanical Class: 3

Applications

Used in residential and commercial buildings for securing exterior and interior doors, particularly where noise reduction is valued. Ideal for multi-family housing, office fit-outs, and public buildings that require DIN-standard mortise locks. Compatible with left-handed European door configurations.

Packaging & Shipping

Standard export packaging. Unit includes mortise lock mechanism with installation accessories.