Gerda E1 55g/35 Cylinder Knob Lock EN 1303:2007 Fire Door Approved Pearl Nickel

Product Overview

The Gerda E1 55g/35 knob cylinder is designed for use in mortise lock systems in residential and commercial buildings. Certified to PN-EN 1303:2007 and rated at a minimum of 100,000 cycles for durability, it carries the highest corrosion resistance rating (Class C) and maintains reliable operation from -20°C to +80°C. The product is approved for installation in fire-rated and smoke-control doors, meeting stringent safety requirements for public and multi-family structures.

Unlike standard cylinders, this SKU features a built-in turn knob for convenient keyless locking and unlocking from the inside, streamlining egress and reducing time spent on key management. This design characteristic helps satisfy accessibility requirements and risk management needs in hospitality, office, and multi-unit residential projects, making it particularly suited for contractors and facility managers handling large-scale door hardware specification.

Key Features

• Durability 100,000 cycles ? certified lifespan for high-use environments


• Corrosion resistance Class C ? highest rating for humid or exterior conditions


• Operating temperature -20°C to +80°C ? stable performance in extreme climates


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


• Turn knob operation ? internal locking/unlocking without key


• Standard EN 1303:2007 certified ? meets recognized EU security standards


• Supplied with 3 dimple keys ? facilitates master keying systems

Technical Specifications

• Certification: PN-EN 1303:2007


• Durability: min. 100,000 cycles


• Corrosion Resistance: Class C


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


• Knob: Yes, on one side


• Cylinder Length: 55g/35


• Fire and Smoke Door Approved: Yes


• Keys Included: 3 (nacinane)


• Finish: Pearl Nickel

Applications

Used in mortise locks for apartment buildings, office complexes, hotels, and regulated public facilities where fire- and smoke-rated doors are installed. Suitable for new construction, renovations, and bulk upgrades in environments requiring high durability, corrosion resistance, and compliance with EN 1303:2007 security standards. Recommended where enhanced internal access control (via turn knob) is necessary.

Packaging & Shipping

Supplied in aesthetic retail packaging. Each unit includes the cylinder with knob, 3 cut keys, a mounting screw, and installation instructions.