Gerda E1 55g/35 Cylinder Lock Brass Knob Extreme Temperature PN-EN 1303:2007

Product Overview

The Gerda E1 55g/35 double cylinder lock with knob is engineered for use with mortise locks in both residential and commercial door assemblies. Certified to PN-EN 1303:2007 with a top-level corrosion and temperature resistance (Class C), it is approved for installation in fire-rated and smoke-control doors, supporting project requirements for safety and durability demanded by property managers and facility operators.

With a tested durability of at least 100,000 cycles, this model's most notable differentiator is its resilience to extreme temperatures from -20°C to +80°C?ensuring secure operation in environments exposed to significant thermal variation or moisture. This characteristic reduces the risk of failure and associated maintenance costs for procurement managers handling projects in industrial, public, or multi-residential buildings, making it especially suited for specification in large-scale or safety-regulated construction.

Key Features

• PN-EN 1303:2007 certified ? meets European lock cylinder standards for safety and performance


• Extreme temperature resistance ? remains functional from -20°C to +80°C for indoor and outdoor use


• High cycle durability ? minimum 100,000 opening/closing operations for long service life


• Corrosion resistance Class C ? suitable for areas with high humidity or harsh conditions


• Fire- and smoke-door approved ? compatible with fire-rated and smoke-control door sets


• Integrated knob ? enables keyless operation from one side for enhanced user convenience


• Includes 3 dimple keys ? each cylinder supplied with secure, machine-cut keys

Technical Specifications

• Certification: PN-EN 1303:2007


• Durability: ?100,000 cycles


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


• Corrosion Resistance: Class C (highest)


• Cylinder Length: 55 mm / 35 mm


• Knob: Yes (on one side)


• Keys Included: 3 (dimple profile)


• Application: Mortise locks


• Fire Door Approved: Yes

Applications

Primarily used in safety-critical applications such as commercial offices, residential complexes, schools, and public buildings where mortise locks are specified and fire or smoke resistance is required. Suitable for fire-rated and smoke-control doors, facilities exposed to outdoor conditions or temperature variation, and projects demanding high durability and low maintenance lock cylinders.

Packaging & Shipping

Each unit is supplied in an aesthetic retail box, including the cylinder with knob, three dimple keys, a fixing screw, and basic installation instructions. Bulk orders are shipped in protective cartons suitable for export.