Wilka 1120 WC Mortise Lock DIN 18251 Left-Handed Nickel 8x8 mm Spindle

Product Overview

Wilka 1120 WC 78/55/20 is a mortise lock engineered for wooden bathroom doors in commercial and residential environments. Featuring an 8x8 mm spindle for WC (bathroom) thumb turns, it is manufactured in accordance with DIN 18251, ensuring compatibility with European door hardware standards and common installation practices.

The key differentiator of this model is its specialized zinc alloy latch mechanism designed for reliable WC privacy function without a regular key cylinder, which reduces installation errors and risk of incorrect function in restroom applications. It is particularly suitable for bulk procurement by contractors and facility managers outfitting multi-unit residential buildings, hotels, or public utility areas requiring standardized bathroom locking solutions.

Key Features

• DIN 18251 compliant ? ensures dimensional and installation compatibility with standard European mortise locks


• WC function ? privacy operation with 8x8 mm spindle, no unlocking key required


• Zinc alloy latch ? increased durability for frequent use in high-traffic bathrooms


• Case depth 55 mm ? fits standard Europrofile wooden door prep


• Left-hand variant ? dedicated for left-opening door configuration


• Nickel finish ? corrosion-resistant and easy to clean surfaces

Technical Specifications

• Function: WC (bathroom) privacy


• Spindle Size: 8x8 mm


• Case Depth: 55 mm


• Centre Distance: 78 mm


• Faceplate Width: 20 mm


• Latch Material: Zinc alloy


• Handing: Left


• Finish: Nickel


• Standard: DIN 18251

Applications

Designed for use in wooden bathroom doors in residential buildings, apartment complexes, hotels, and other commercial or public facilities requiring privacy locks with WC thumb turn function. Suitable for left-handed doors. Can be specified where DIN 18251 compliance is required.

Packaging & Shipping

Standard export packaging. Unit includes lock body only; strike plate is not included. Installation accessories and manual provided per order specification.