One-Sided Turnbolt Deadbolt are commonly used on patio doors but can be used on any door that you desire to lock only from the inside. Uses thumbturn inside but there is no plate or exposed trim on the exterior. This long-lasting deadbolt has a lifetime mechanical and finish warranty.

One-Sided Deadbolt Without Exposed Exterior Trim: A thumbturn throws and retracts the deadbolt from the interior. It does not go through to the outside of the door. No locking/unlocking from the exterior.

Also Available: One-Sided Kwikset Deadbolt With Exposed Exterior Trim

Features of the Kwikset 663 Turnbolt Deadbolt:

• Interior turn piece meets ADA requirements.
• All metal mechanics.
• 1" bolt throw.
• Manufacture Lifetime Mechanical & Finish Warranty.

Specifications for the Kwikset 663 Deadbolt:

• Inside Lock Diameter: 2-1/2"
• Inside Lock Projection: 1"
• Thumb Turn Length: 1-3/4"
• Door Thickness: adjustable 1-3/8" to 1-3/4"
• Backset: 2-3/8"
• Strike Plate: 1" x 2-1/4" square corner

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