Von Duprin QELA-9927-EO W/cyl HOLE-US4-3 Exit Device

Product Description

The VON DUPRIN QELA-9927-EO W/CYL HOLE-US4-3 is a rim-style exit device designed for commercial and institutional door hardware applications. It features a cylinder hole cutout for optional key cylinder integration, allowing outside entry when paired with the appropriate cylinder. The US4 finish indicates a satin brass coating, and the -3 suffix designates a standard door thickness configuration. This device is installed by licensed locksmiths, door hardware specialists, or commercial contractors working on code-compliant egress assemblies.

Exit devices of this type are commonly installed on commercial interior and exterior doors in offices, schools, hospitals, and public buildings where life-safety egress codes require panic or fire exit hardware. The EO designation indicates an exit-only function, meaning the latch retracts from the inside push bar only. The cylinder hole option supports a trim kit or outside key cylinder for controlled re-entry without a separate trim piece. Installation is typically part of a broader door hardware schedule on new construction or renovation projects.

Key Features

• Exit-only (EO) function for one-directional egress control
• Cylinder hole included for optional outside key cylinder integration
• US4 satin brass finish for corrosion resistance and aesthetic consistency
• Rim-style mounting for surface installation on standard commercial door preparations
• Sold as a single unit (EA) per the manufacturer unit of measure

Compatibility

Designed as an OEM-style exit device replacement or new installation unit for commercial doors requiring rim-mount panic hardware with an exit-only function and cylinder hole preparation.

Installation Notes

Installation should be performed by a qualified locksmith or commercial door hardware technician in accordance with applicable building and life-safety codes, including IBC egress requirements. Verify door thickness and backset before mounting to ensure proper latch engagement with the strike. Disengage all electrical connections and confirm no active access control wiring is present before beginning work on doors with integrated hardware. Do not install on fire-rated openings without confirming the device carries the appropriate fire label for that application.