dormakaba OGRO Base-4 Lever-Knob Set EN 1906 Class 4 INOX Left Long Plate 72mm

Product Overview

The dormakaba OGRO Base-4 lever-knob set (8100/7050/3020) is configured for fire-rated door installations with cylinder (PZ) compatibility and comes with a long plate, left-handed, and 8 mm spindle design. Certified to EN 1906 (Class 4) for intensive use and corrosion resistance, as well as DIN 18273 and EN 179 for fire and smoke protection applications. Stainless steel construction (INOX) ensures durability in demanding environments such as commercial, institutional, and public sector buildings.

This SKU features a built-in positioning spring mechanism that guarantees the lever returns to horizontal after actuation, minimizing maintenance needs and ensuring compliance with certification performance requirements. Its highly corrosion-resistant INOX finish and fire/smoke-door approvals make it particularly desirable for procurement managers specifying hardware for buildings with strict safety and durability standards, especially in high-traffic or regulated settings.

Key Features

• EN 1906 Class 4 ? certified for intensive use and high corrosion resistance
• DIN 18273 compliant ? suitable for fire-rated and smoke-control doors
• Built-in positioning spring ? lever reliably returns to horizontal after use
• INOX stainless steel ? maximum durability and resistance to wear and corrosion
• 200,000 cycle tested ? proven longevity for commercial installations
• Compatible with 72 mm WB cylinder lock ? supports standard European security fittings
• U-form safety grip ? reduces risk during emergency evacuation per EN 179

Technical Specifications

• Classification: EN 1906 (4 7 - B1 1 4 0 A)
• Material: Stainless steel (INOX)
• Finish: Silver satin
• Spindle Size: 8 mm
• Cylinder Spacing: 72 mm WB
• Side: Left
• Plate: Long
• Positioning Mechanism: Built-in spring
• Testing: 200,000 cycles
• Fire Resistance Class: B1
• Certifications: EN 1906, DIN 18273, EN 179
• Certificate: MPA NRW nr. 123001163-01

Applications

Designed for installation in fire-rated, smoke-control, and standard doors of commercial, educational, healthcare, and public buildings. Suitable for projects requiring certified hardware for safe evacuation and compliance with European standards. Used in settings such as offices, hospitals, hotels, and schools where intensive use and regulatory safety features are mandatory.

Packaging & Shipping

Standard export packaging. Set includes lever-knob handle, long plate, 8 mm spindle, mounting hardware, and installation instructions. Certificate documentation provided for compliance verification.