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The KWIKSET 400T-3S is a Tylo-style knob entry door lock designed for residential exterior door applications. It ships as a complete entry set, including the knob lock with SmartKey Security rekeying capability, a 6AL latch, and an RCS strike plate, all finished in Bright Brass. SmartKey technology allows the cylinder to be rekeyed in seconds without removing the lock from the door, using the included SmartKey tool and a new key. The lock is factory-assembled and intended for standard residential door prep. Installation requires basic hand tools and is performed by locksmiths, finish carpenters, or experienced DIYers.
This lock is suited for residential entry doors requiring a knob-style lockset with keyed entry on the exterior and a turn-button or matching function on the interior. The Bright Brass finish coordinates with standard residential door hardware. The included 6AL latch and RCS strike simplify single-source ordering by eliminating the need to source hardware components separately. Typical installation sites include single-family homes, rental properties, and light commercial residential-style entries where a knob entry lock is code-acceptable.
Designed as an OEM-style replacement or new-installation knob entry lockset for standard residential door prep with a 2-3/8 inch or 2-3/4 inch backset, where knob-style entry hardware is appropriate.
Installation is performed by a locksmith, carpenter, or qualified tradesperson. Power down any associated electronic access control before servicing adjacent hardware. Confirm door backset measurement before installation to ensure correct latch selection. Follow local building codes regarding required hardware grades for entry doors in occupied residential structures.
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