Gerda E1 40g/35 Cylinder Insert Brass Thumbturn Class C Corrosion PN-EN 1303

Product Overview

The Gerda E1 40g/35 Cylinder Insert with thumbturn is a mortise lock profile cylinder, widely used in residential and commercial buildings for entry and interior doors. It is certified according to PN-EN 1303:2007 and approved for use with fire-rated and smoke-control doors, providing compliance and traceability for regulated building projects. The insert is resistant to corrosion and temperature variations, suitable for demanding environments.

Its most distinctive feature is class C certification for corrosion resistance, which is the highest grade per the PN-EN 1303:2007 standard. This eliminates the risk of premature wear or malfunction in high-humidity or outdoor environments, reducing maintenance needs for facilities managers. This model is particularly well-suited for bulk procurement by building contractors outfitting fire-rated doors in multi-unit residential or institutional projects.

Key Features

• Class C corrosion resistance ? highest available per PN-EN 1303:2007 for extended service life in demanding, humid, or exterior applications


• Tested durability ? minimum 100,000 operating cycles for long-term reliability under frequent use


• Fire/smoke door approved ? compatible with fire-rated and smoke-control doors, supporting code-compliant installations


• Operating temperature -20°C to +80°C ? functional across wide ambient conditions for internal and external doors


• Supplied with 3 milled keys ? supports initial tenant handover and master key installations


• Brass construction ? robust and corrosion-resistant material for enhanced security and durability


• Integrated thumbturn ? convenient operation from interior side without need for key

Technical Specifications

• Certification: PN-EN 1303:2007


• Corrosion Resistance: Class C


• Durability: ?100,000 cycles


• Operating Temperature: -20°C to +80°C


• Application: Mortise lock compatible


• Included Keys: 3 milled


• Finish: Brass


• Function: Thumbturn (one side)

Applications

Used in internal and external doors in residential buildings, hotels, schools, offices, and institutional facilities. Particularly suited for fire-rated and smoke-control doors per EN standards. Suitable for projects requiring high corrosion resistance and long-term operational durability, such as high-traffic entrances and humid environments. Can be installed in both new builds and retrofit security upgrades.

Packaging & Shipping

Standard export packaging. Unit includes the cylinder insert, three milled keys, one fixing screw, and user documentation in an aesthetic retail box.