Refresh your space or tackle a new project with inspiration from Lowe’s. Learn More >

Link to Lowe's Home Improvement Home Page

Prices, Promotions, styles, and availability may vary. Our local stores do not honor online pricing. Prices and availability of products and services are subject to change without notice. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted.

Prime-Line Door Reinforcement Lock, 3 in. Stop, Aluminum Construction, Satin Nickel Anodized Finish

Images Coming Soon

Get Pricing & Availability

Designed to withstand 800 lbs. of force, this U 10827 satin nickel finish door reinforcement lock helps to prevent doors from being kicked in, increasing your home security and keeping you and your family safe
The included 3 in. hardened screws make installation a breeze, extra security and peace of mind can be achieved in just minutes
Use this high security door reinforcement lock for additional home security on any swing-in door of any door thickness - it helps to ensure any door cannot be opened from the outside

Best Price. Guaranteed

Find a lower price on an exact item? We'll match it. Some exclusions apply.

FREE Returns

Return it in store or ship it back for free. Eligibility rules apply.

FREE Shipping

Delivery is on us for orders over $45. Some exclusions apply.

This high security door lock is constructed of extruded aluminum and comes in a satin nickel anodized finish. Meets the Texas building code requirements, and it is designed to withstand up to 800 lbs. of force, making it virtually impossible to breach from the exterior. Features a spring-loaded, child-safe and tamper-resistant design that protects against unauthorized entry by preventing lock bumping and lock picking (while in the locked position). Installation of this non-handed reinforcement lock can be accomplished in just minutes. Can be used on any swing-in door of any door thickness. All fasteners and installation instructions are included with this item. Fasteners include 3 in. long hardened screws that anchor into the door jamb and studs.

Designed to withstand 800 lbs. of force, this U 10827 satin nickel finish door reinforcement lock helps to prevent doors from being kicked in, increasing your home security and keeping you and your family safe
The included 3 in. hardened screws make installation a breeze, extra security and peace of mind can be achieved in just minutes
Use this high security door reinforcement lock for additional home security on any swing-in door of any door thickness - it helps to ensure any door cannot be opened from the outside
This Defender Security door blocker by Prime-Line has a spring-loaded design that is both child-safe and tamper-resistant, it can be installed higher on the door where your children cannot reach
Pre-drilling the included 3 in. security screws require holes to be pre-drilled with 1/8 in. drill bit
Helps prevent doors from being kicked in and protects against lock picking and bumping
A Phillips head screwdriver is required for installation
For further dimensional information, please see the line drawing