dormakaba OGRO Base-4 Lever Handle Set 8100/7051 INOX Long Backplate 8mm Spindle

Product Overview

The dormakaba OGRO Base-4 Security Lever Handle Set (8100/7051) is a stainless steel lever handle on a long backplate (72 mm PZ) designed for use in high-traffic commercial and institutional environments. Manufactured from INOX stainless steel, it resists corrosion (Class 4) and is suitable for both standard and fire-rated or smoke-control doors, meeting EN 1906, DIN 18273, and EN 179 standards. Fire resistance has been tested to 200,000 operating cycles, confirming suitability for doors on escape routes and public access areas.

The primary differentiator for this specific SKU is its 8 mm square spindle variant, which is not fire-certified but offers universal compatibility with standard European lock cases. This reduces installation risk in retrofit and mixed-door projects where not all doors require fire certification. Particularly suited for large-scale commercial refurbishments, public buildings, or projects where the majority of doors are standard with only select fire doors, allowing streamlined procurement and installation.

Key Features

• 8 mm square spindle ? wide compatibility with standard European mortise locks for non-fire-rated doors


• INOX stainless steel construction ? ensures high corrosion resistance (Class 4) for demanding environments


• Tested for 200,000 cycles ? suitable for high-traffic commercial doors, institutional, and public buildings


• EN 1906 Class 4 ? highest user category for intensive use installations


• Fire and smoke door compatibility ? meets DIN 18273 (note: this SKU with 8 mm spindle is not fire-certified)


• U-shaped safety handle ? minimizes snag hazards and supports evacuation safety


• Integrated return spring ? ensures handle returns smoothly to horizontal position, reducing wear

Technical Specifications

• Backplate Length: Long plate, 72 mm PZ profile


• Spindle Size: 8 mm


• Material: Stainless steel (INOX)


• Corrosion Resistance: Class 4 (very high)


• Durability: Tested to 200,000 cycles


• Certification: EN 1906 Class 4


• Handle Form: U-shape, safety pattern


• Fire Resistance: Not certified with 8 mm spindle


• Finish: Satin silver (INOX)


• Manufacturer: dormakaba


• Product Code: 8100/7051

Applications

Designed for use in commercial, institutional, and public buildings including offices, schools, healthcare facilities, and multi-family properties. Suitable for standard doors and, in other variants, also for fire- and smoke-rated door assemblies. This set is used where high durability, intensive use ratings, and minimal-maintenance finishes are required, such as in escape routes, stairwells, and public corridors. For fire door installations, specify the 9 mm spindle certified variant.

Packaging & Shipping

Standard export packaging. Each set includes a pair of lever handles on long backplates, an 8 mm spindle, mounting hardware, and installation instructions.