Metalplast-Częstochowa MULTISTRONG Multi-Point Mortise Lock Class C For PORTA Doors Galvanized

Product Overview

The Metalplast-Częstochowa MULTISTRONG is a multi-point mortise lock designed for PORTA doors, intended for both external and internal entrance doors requiring enhanced burglary resistance. Certified to class C security standards, it is suitable for use in commercial and residential buildings, and can be installed in fire-rated and smoke-control door assemblies.

The defining feature of this lock is its C-class certification, demonstrating compliance with strict Polish security standards for resistance to forced entry. This gives procurement managers and project specifiers confidence in meeting building security requirements for regulated environments. It is highly recommended for public sector buildings, multi-unit residential entrances, and any project requiring auditable anti-burglary protection.

Key Features

• Multi-point locking ? improves door resistance along its entire height for increased security


• C-class certification ? tested for high burglary resistance and approved for regulated installations


• Compatible with PORTA doors ? ensures seamless integration with popular external and internal entry door systems


• Fire- and smoke-door ready ? suitable for use in fire-rated and smoke-control doors


• Galvanized finish ? white zinc coating protects against corrosion in high-humidity locations


• High operational reliability ? robust design intended for repeated daily use


• Mortise type ? concealed installation preserves door aesthetics

Technical Specifications

• Certification: Class C


• Lock Type: Multi-point mortise


• Center Distance: 72 mm


• Backset: 65 mm


• Faceplate Length: 1729 mm


• Faceplate Width: 20 mm


• Finish: White zinc (galvanized)


• Compatible Doors: PORTA external and internal doors


• Fire Door Compatibility: Yes


• Smoke Door Compatibility: Yes

Applications

Intended for use on external and internal entrance doors in residential buildings, multi-family dwellings, public sector facilities, and commercial spaces requiring enhanced burglary resistance. Compliant with fire-rated and smoke-control door assemblies; fits OEM and retrofit projects where C-class certified security is specified.

Packaging & Shipping

Standard export packaging. Each unit supplied with lock body and installation accessories. For elements between 2.0 and 2.2 m, additional shipping costs apply; elements above 2.2 m only available for personal collection.