Emtek C5110ROUUS19 Round Knob Passage Set Flat Black

Product Description

The EMTEK C5110ROUUS19 is a round knob passage set finished in Flat Black, designed for interior doors where a latch mechanism is needed without locking hardware. It pairs a round knob with a square rose and includes a Comfort Function (CF) mechanism on a 2-3/8 inch backset. The set fits doors ranging from 1-3/8 inches to 1-3/4 inches thick. Passage sets like this one are standard on hallway and closet doors where free passage is required. Installation is straightforward for carpenters, general contractors, and finish trades working on residential interior door hardware.

This passage set is suited for residential interior applications including hallways, closets, and common-area doors where no privacy or keyed lock is required. The square rose profile complements transitional and contemporary interior design schemes. The Flat Black finish coordinates with modern fixtures and trim packages. The CF mechanism provides smooth latch operation across the compatible door thickness range of 1-3/8 inches to 1-3/4 inches, covering standard hollow-core and solid interior door slabs commonly found in residential new construction and remodel work.

Key Features

• Round knob profile paired with a square rose for a clean, geometric look
• Flat Black finish suited for modern and transitional interiors
• 2-3/8 inch backset accommodates standard interior door prep
• Compatible with door thicknesses from 1-3/8 inches to 1-3/4 inches
• Comfort Function (CF) mechanism for smooth, consistent latch operation
• Passage function — no locking, ideal for hallways and closets

Compatibility

Designed for interior passage applications on doors 1-3/8 inches to 1-3/4 inches thick with a standard 2-3/8 inch backset bore preparation.

Installation Notes

Installation is performed by carpenters or finish contractors working on interior door hardware. Confirm the door bore diameter and backset measurement match the hardware spec before installation. No electrical shutoff is required. Follow the manufacturer assembly instructions for proper rose and latch alignment, and verify the latch operates freely before closing the door for the first time.