Gerda PRO System WKM4 Cylinder Lock 30/50mm Nickel Satin Class D Anti-Drill EN 1303

Product Overview

The Gerda PRO System (WKM4) 30/50 nickel satin cylinder lock is an anti-burglary insert designed for high-security doors in residential and commercial contexts. Certified to PN-EN 1303:2015-07 with classification 1 6 0 B 0 C 6 D and tested by the Institute of Precision Mechanics in Warsaw, it provides protection against bumping, drilling, and various mechanical attacks. Rated for use in fire-rated and smoke-control doors, it operates reliably between -20°C and +80°C and meets the highest corrosion and security standards.

This SKU distinguishes itself by offering class D resistance?verified for up to 10 minutes against drilling and mechanical assaults?backed by steel-hardened inner elements and anti-burglary bars. For B2B buyers responsible for specifying door hardware in high-risk environments, this eliminates vulnerability to forced entry and satisfies rigorous access-control requirements. Particularly suited for bulk procurement in facilities or OEM projects needing certified security for premium fire doors.

Key Features

• Class D attack resistance ? certified for up to 10 minutes against drilling and mechanical attacks, meeting highest security standards


• Anti-bumping protection ? integrated pin and tumbler configuration resists unauthorized opening methods


• Over 2,700,000 key code combinations ? supports high-volume access control without security compromise


• 6 active tumblers ? ensures mechanical durability for >100,000 opening/closing cycles in heavy-use doors


• Certified for fire and smoke doors ? compliant with PN-EN 1303:2015-07 for p.poż. and dymoszczelne assemblies


• Nickel satin finish ? offers corrosion resistance and durability in harsh environments from -20°C to +80°C


• Includes 5 drilled keys and code card ? facilitates secure distribution and key management in B2B settings

Technical Specifications

• Cylinder Length: 30/50 mm


• Finish: Nickel satin


• Classification: 1 6 0 B 0 C 6 D (PN-EN 1303:2015-07)


• Certification: Institute of Precision Mechanics, Warsaw


• Number of Tumblers: 6


• Key Code Variants: >2,700,000


• Mechanical Durability: >100,000 cycles


• Attack Resistance: Class D (drilling/mechanical 5/10 min)


• Fire Door Approval: Yes


• Smoke-Control Door Approval: Yes


• Corrosion and Temperature Resistance: Class C (-20°C to +80°C)


• Includes: 5 drilled keys, code card, fixing screw

Applications

Appropriate for installation in security, fire-rated, and smoke-control doors in multi-residential buildings, offices, industrial facilities, and public infrastructure. Recommended for new construction, retrofits, and OEM projects requiring certified high-security inserts with anti-burglary and anti-drilling protection. Supports bulk installations for property managers and facility integrators focused on access management and regulatory compliance.

Packaging & Shipping

Each cylinder is packaged in a sealed box including the lock insert, 5 drilled keys, a code card, and a fixing screw. Export packaging guarantees product integrity and tamper-evidence for bulk shipments.