Gerda E1 35g/40 Cylinder Lock Thumbturn EN 1303 Satin Nickel Class C

Product Overview

The Gerda E1 35g/40 double cylinder lock insert with thumbturn is designed for use with mortise locks in residential and commercial door assemblies. It is certified to PN-EN 1303:2007 with the highest corrosion resistance class (C) and is suitable for installation in fire-rated and smoke-control doors. Durability is rated for a minimum of 100,000 operating cycles, and the mechanism functions reliably within a temperature range of -20°C to +80°C.

The distinguishing feature of this model is its integrated thumbturn knob, which streamlines operation for interior users by allowing secure keyless locking/unlocking from one side. This reduces the need for additional hardware and minimizes installation time, supporting rapid upgrades in multi-unit residential or commercial retrofit projects. The product is particularly well-suited for bulk orders in property management, hospitality, or any project requiring EN 1303-certified fire door hardware with enhanced corrosion resistance.

Key Features

• Integrated thumbturn knob ? enables keyless locking/unlocking from the inside


• PN-EN 1303:2007 certified ? meets safety and durability requirements for commercial and residential fire-certified doors


• Corrosion resistance class C ? highest standard for operation in humid or harsh environments


• Minimum 100,000 cycles durability ? suitable for intensive usage scenarios


• Temperature resistance -20°C to +80°C ? reliable in cold and heated building zones


• Three dimple keys included ? allows for secure distribution to multiple users


• Compatible with mortise locks ? for straightforward integration into most standard doors

Technical Specifications

• Type: Double cylinder with thumbturn


• Certification: PN-EN 1303:2007


• Durability: Minimum 100,000 cycles


• Corrosion Resistance: Class C


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


• Application: Fire-rated and smoke-control doors


• Finish: Nickel satin


• Length: 35 mm (internal) / 40 mm (external)


• Accessories: 3 dimple keys, retaining screw

Applications

Used in residential buildings, hotels, offices, and institutional facilities where mortise locks are installed. Compatible with fire-rated and smoke-control doors, making it suitable for public access and multi-family buildings. Supports property upgrades, retrofits, and bulk procurement projects requiring high durability and corrosion resistance for EN 1303-certified door systems.

Packaging & Shipping

Supplied in an aesthetic blister package. Each set includes the cylinder insert, three dimple keys, retaining screw, and an installation manual.