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The EMTEK 8569US4 is a square single sided deadbolt designed for residential and light commercial door security applications. It ships in a satin brass finish and fits doors that are 1-3/4 inches thick. The unit accommodates two backset options: 2-3/8 inches and 2-3/4 inches, giving installers flexibility on standard pre-bored door preps. At 1.1 pounds, the hardware is solid without being cumbersome. Single sided configuration means the bolt is operated by a key cylinder on the exterior and has no interior thumbturn, which is typical for utility doors, storage rooms, and secondary access points.
This deadbolt is appropriate for interior and exterior door applications where a clean, square-edge aesthetic is required. The satin brass finish suits transitional and traditional design themes. It is commonly installed on entry doors, office doors, and utility access doors in residential or light commercial settings where a keyed-exterior-only lockset is specified. Custom assembly is performed at the manufacturer's Southern California facility, and the unit ships as a single assembly.
Designed as an OEM-style replacement or new-installation deadbolt for standard pre-bored residential and light commercial doors measuring 1-3/4 inches in thickness with a 2-3/8 inch or 2-3/4 inch backset preparation.
Installation is typically performed by a licensed locksmith or finish carpenter following standard door hardware prep guidelines. Confirm the door bore diameter and backset measurement before installation. Remove all tension from the door and ensure the door is properly aligned in the frame before drilling or mounting. Follow local building codes for exterior door hardware requirements where applicable.
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