DORMA PURE 3548 V Fixed Knob Oval Escutcheon Stainless Steel Class 4 Corrosion Resistant

Product Overview

The DORMA PURE 3548 V fixed knob with oval escutcheon is manufactured from stainless steel, designed for installation on wooden or profile doors with a thickness of 38 to 60 mm. It meets the PN-EN 1906 standard, with classification for high-frequency use (category 3), durability up to 200,000 cycles (class 7), and fire resistance (class B), making it suitable for public and commercial building environments requiring certified hardware.

This model stands out for its very high corrosion resistance (class 4 per PN-EN 1906), a crucial factor for facility managers and procurement teams seeking long-term durability in demanding locations such as humid or high-traffic areas. Its robust performance and fire-rating make it particularly suited for bulk procurement in public buildings, offices, hotels, and facilities where fire and smoke control doors are specified.

Key Features

• Stainless steel construction ? resists wear and provides long-term performance in commercial environments


• PN-EN 1906 certified ? guarantees compliance with durability and safety standards


• High-frequency category 3 ? supports intensive use in public buildings and offices


• Durability class 7 ? tested for 200,000 operating cycles


• Corrosion resistance class 4 ? withstands aggressive and humid environments


• Fire resistance class B ? suitable for fire-rated and smoke-control doors


• 8 mm square spindle ? compatible with standard European door hardware

Technical Specifications

• Door Thickness Range: 38-60 mm


• Material: Stainless steel


• Spindle Size: 8 mm square


• Certification: PN-EN 1906


• Category: 3 (high-frequency use)


• Durability Class: 7 (200,000 cycles)


• Corrosion Resistance: Class 4


• Fire Resistance: Class B


• Escutcheon Shape: Oval

Applications

Designed for installation on wooden and profile doors in public buildings, commercial properties, offices, hotels, and healthcare facilities. Suitable for fire-rated and smoke-control doors where certified hardware is required. Ideal for specification-driven projects, bulk installation in new builds, or facility upgrades where high durability and corrosion resistance are critical.

Packaging & Shipping

Standard export packaging. Unit includes knob with oval escutcheon, 8 mm square spindle, and installation hardware.