Emtek 8478US19 Quincy Single Cylinder Deadbolt Flat Black

Product Description

The EMTEK 8478US19 is a single cylinder deadbolt designed for residential and light commercial door applications. It ships with two backset options — 2-3/8 inches and 2-3/4 inches — making it compatible with standard door preparations without additional hardware. The Quincy style deadbolt is finished in Flat Black (US19) and is built for 1-3/4 inch door thickness. At 2.55 pounds, the unit is solid in hand and appropriate for entry doors where both security and finish consistency are priorities. Installation and final assembly are performed in Southern California to order specifications.

This deadbolt is suited for residential entry doors, interior locking doors, and light commercial applications where a keyed single cylinder lock is required. The dual backset compatibility — 2-3/8 inches and 2-3/4 inches — covers the two most common door prep standards found in residential and remodel construction. The Flat Black finish coordinates with contemporary and transitional hardware styles. Licensed locksmiths, carpenters, and general contractors are the typical installers for this type of hardware.

Key Features

• Single cylinder deadbolt with keyed exterior and thumb turn interior
• Dual backset compatibility: 2-3/8 inches and 2-3/4 inches
• Designed for 1-3/4 inch door thickness
• Flat Black (US19) finish for a consistent, matte appearance
• Custom assembled to order in Southern California
• Sold individually (Sales Unit: EA)

Compatibility

Designed as a single cylinder deadbolt replacement or new installation for standard residential and light commercial doors prepared for 2-3/8 inch or 2-3/4 inch backset with 1-3/4 inch door thickness.

Installation Notes

Installation is performed by a licensed locksmith, finish carpenter, or qualified general contractor. Ensure the door is fully closed and stable before marking and drilling the bolt bore and edge bore. Verify the door thickness and backset measurement against the existing door prep before beginning installation. Follow local building codes for egress door hardware requirements where applicable.