Gerda E1 40g/50 Cylinder Lock Thumbturn Class C Corrosion Resistance Pearl Nickel

Product Overview

The Gerda E1 40g/50 cylinder lock with thumbturn in pearl nickel finish is used in conjunction with mortise locks for secure access control. Certified to PN-EN 1303:2007 with a durability rating of at least 100,000 cycles, it delivers high performance for residential and commercial settings, including fire and smoke-rated doors. Its class C corrosion resistance ensures reliable function even in environments exposed to moisture or fluctuating temperatures.

The distinguishing feature is its class C (highest) corrosion and temperature resistance, which addresses the risk of lock failure in harsh or exposed install locations. This makes it particularly suitable for bulk procurement by facility managers upgrading fire/smoke barrier doors or for OEM projects requiring certified hardware for public and commercial building doors.

Key Features

• Thumbturn mechanism ? enables quick locking/unlocking from inside without a key


• Durability ? minimum 100,000 operating cycles ensures long-term reliability


• Corrosion resistance class C ? highest rating for moisture exposure, suitable for humid and outdoor-adjacent areas


• Temperature resistant -20°C to +80°C ? usable in both cold storage and heated environments


• Certified to PN-EN 1303:2007 ? compliance with European cylinder standards for security and performance


• Approved for fire and smoke-rated doors ? can be installed where safety standards must be met


• Pearl nickel finish ? aesthetic and durable surface for modern interiors

Technical Specifications

• Standard: PN-EN 1303:2007


• Durability: 100,000 cycles minimum


• Corrosion Resistance: Class C (highest)


• Temperature Range: -20°C to +80°C


• Compatible Lock Type: Mortise locks


• Fire/Smoke Door Approval: Yes


• Finish: Pearl nickel


• Length: 40/50 mm (side A/side B)


• Included Keys: 3 cut keys

Applications

Commonly installed in fire-rated and smoke-control doors in residential, commercial, and public-sector buildings. Suitable for facility upgrades, new construction, and OEM manufacturing where certified security and durability are required. The high corrosion and temperature resistance makes it ideal for doors facing humid, outdoor, or climate-sensitive conditions.

Packaging & Shipping

Standard export packaging. Each cylinder is supplied with 3 cut keys, a mounting screw, and an installation manual in a presentable box.