OBI K3 Mortise Lock Class 3 DIN 18251 Polished Steel Left-Hand WC Teflon Latch

Product Overview

The OBI K3 mortise lock is designed for installation in bathroom doors in residential and commercial buildings. Engineered according to DIN 18251 standards, it features a mechanical class 3 rating for enhanced durability. The lock body is constructed from polished steel and intended for left-hand operation, with a WC (bathroom) function compatible with an 8x8 mm spindle.

A key differentiator of this SKU is the teflon-equipped latch, which reduces noise when the door is shut, minimizing acoustic disturbance in shared environments. This feature makes the OBI K3 particularly suited for procurement in hotels, apartment complexes, and office restrooms where low operating noise is a project requirement.

Key Features

• DIN 18251 compliant ? meets recognized European standards for mortise locks


• Mechanical class 3 ? suitable for medium-duty interior bathroom doors in commercial settings


• Teflon elements in latch ? reduces latch noise during closing


• Polished steel construction ? corrosion-resistant for humid bathroom environments


• WC function ? designed for privacy doors, includes 8x8 mm spindle compatibility


• Left-handed configuration ? ensures proper fit for left-side door installations

Technical Specifications

• Lock Type: Mortise


• Mechanical Class: 3


• Standard: DIN 18251


• Material: Polished steel


• Latch: Teflon elements for noise reduction


• Spindle: 8x8 mm WC


• Configuration: Left-handed

Applications

Used in bathroom doors in residential apartments, hotels, office complexes, and hospitality sector buildings. Suitable for medium-duty interior doors requiring privacy (WC function) and low noise operation in multi-unit environments. Compatible with DIN 18251 hardware specifications for European construction projects.

Packaging & Shipping

Standard export packaging. Each unit includes the lock body, mounting hardware, and installation instructions. Strike plate not included.