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Thick. Each pack includes – 2 adjustable jaw that fits all vinyl frame rail thicknesses from 1/16" up to 1/2 in.
Add extra security – use these sliding window locks to prevent unwanted intruders and avoid falling accidents –keeping your windows closed when you want them the most secure! Air and a breeze can get in, but no intruders. Product info – these sliding window locks have a diecast construction with a white painted finish and can fit most vinyl frame rail thicknesses ranging from 1/16” to ½”.

Keep your home safe – designed to withstand 800 lbs. Screws as you can strip or break the heads. It can be installed higher on the door where your children can’t reach! Plus, not only can doors not be kicked in by intruders, it protects against lock picking and bumping while in the locked position.
Width is 1 to 038 inch. Drill bit. Child-safe and tamper-resistant – this defender security door blocker by prime-line has a spring-loaded design that is both child-safe and tamper-resistant. It helps to ensure any door cannot be opened from the outside. Watch the video on this page for installation tips and operating instructions.

Child-safe security device - this door loop lock can also be installed out of reach of children so they cannot open the door by themselves, providing additional child-safe door security.

Easy installation - installation is quick and easy – additional security for your small items and drawers are within reach! It can be mounted to metal or wood, door and/or drawer panels. Durable construction – this drawer and cabinet lock is constructed of diecast and steel components with a stainless steel finish.

Reinforce and repair: reinforce weak spots on entry doors and repair damaged areas with this stainless-steel lock and door reinforcer.
Reinforces and repairs doors. Accommodates key-in knob locksets or deadbolts. For 2-3/8in. Door thickness. Easy installation: installation is quick and easy, 2-3/8” backset, 2-1/8” bores, and all fasteners are included – extra security and peace of mind can be achieved in just minutes! Fits: 1-3/4” thick doors, 3-7/8” width x 4-1/2” height.



Child-safe security device – this swing bar lock can also be installed out of reach of children so they cannot open the door by themselves, providing additional child-safe door security.


1. Defender Security
#ad
Defender Security U 9809 Sliding Window Lock for Vinyl Windows – Easy Installation to Keep Windows Securely Closed – White Diecast Construction Pack of 2
#adDefender Security #ad - Allows window to lock in ventilating position; cam style locking lever; no tools required. The locks feature an adjustable jaw that has a “vise-like” grip, and they are capable of opening up to ½” wide. For use on most vinyl windows – these sliding window locks are for use on horizontal sliding windows and most vertical sliding single hung windows as a secondary window lock.Thick. Each pack includes – 2 adjustable jaw that fits all vinyl frame rail thicknesses from 1/16" up to 1/2 in.
More information #ad
Securely lock windows – these u 9809 sliding window locks for vinyl windows help keep them securely closed. This is for Vinyl Windows only. Vise like" grip holds securely and will not mar frame. Add extra security – use these sliding window locks to prevent unwanted intruders and avoid falling accidents –keeping your windows closed when you want them the most secure! Air and a breeze can get in, but no intruders. Product info – these sliding window locks have a diecast construction with a white painted finish and can fit most vinyl frame rail thicknesses ranging from 1/16” to ½”.
Brand | Defender Security #ad |
Manufacturer | Prime-Line Products (Home Improvement) #ad |
Height | 5.44 Inches |
Length | 1.18 Inches |
Width | 1 Inches |
Part Number | U 9809 |
Model | U 9809 |
Warranty | Goods are warranted against manufacturing defects for 1 year. In no case is Prime-Line responsible for user related damage or damage incurred during installation. Warranty is void if products are subjected to abnormal conditions, misapplication or abuse. |
More information #ad
2. Defender Security
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Defender Security Satin Nickel U 10827 Door Reinforcement Lock – Add Extra, High Security to your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction Finish
#adDefender Security #ad - 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! Easy installation – the included 3” hardened screws make installation a breeze – extra security and peace of mind can be achieved in just minutes.Keep your home safe – designed to withstand 800 lbs. Screws as you can strip or break the heads. It can be installed higher on the door where your children can’t reach! Plus, not only can doors not be kicked in by intruders, it protects against lock picking and bumping while in the locked position.
More information #ad
Length is 2 to 019 inch. Additional home security - use this high security door reinforcement lock for additional home security on any swing-in door of any door thickness. Width is 1 to 038 inch. Drill bit. Child-safe and tamper-resistant – this defender security door blocker by prime-line has a spring-loaded design that is both child-safe and tamper-resistant. It helps to ensure any door cannot be opened from the outside. Watch the video on this page for installation tips and operating instructions.
Brand | Defender Security #ad |
Manufacturer | Prime-Line Products #ad |
Height | 3 Inches |
Length | 1 Inches |
Weight | 0.37 Pounds |
Width | 2.43 Inches |
Part Number | U 10827 |
Model | U 10827 |
Warranty | Goods are warranted against manufacturing defects for 1 year. In no case is Prime-Line responsible for user related damage or damage incurred during installation. Warranty is void if products are subjected to abnormal conditions, misapplication or abuse. |
More information #ad
3. Defender Security
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Defender Security U 9846 Prime-Line Loop Sliding Door Lock, Nickel Plated, 1-1/8", Steel
#adDefender Security #ad - Durable construction – this door loop lock has a hardened steel locking bar with diecast constructed mounting plate and keeper, with a nickel plated finish. Product info - this locking device features a 1-1/8” reach, which is designed to secure the door to the jamb.Child-safe security device - this door loop lock can also be installed out of reach of children so they cannot open the door by themselves, providing additional child-safe door security.
More information #ad
Secondary security locking device – this u 9846 patio sliding door loop Lock can be used on a patio sliding door as a secondary security lock for increased home safety. Easy installation - installation is quick and easy – additional security for your home or office doors are within reach! Installation fasteners are included.Brand | Defender Security #ad |
Manufacturer | Prime-Line Products (Home Improvement) #ad |
Height | 6.44 Inches |
Length | 0.69 Inches |
Weight | 0.28 Pounds |
Width | 1.12 Inches |
Part Number | U 9846 |
Model | U 9846 |
Warranty | Goods are warranted against manufacturing defects for 1 year. In no case is Prime-Line responsible for user related damage or damage incurred during installation. Warranty is void if products are subjected to abnormal conditions, misapplication or abuse. |
More information #ad
4. Defender Security
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Defender Security U 9941KA Prime Line U-9941Ka Cam Lock, Die Cast Stainless Steel, 2 Key, 5/16"
#adDefender Security #ad - Keyed alike, 2 reversible rotation washers, a trim collar, Yale Y-11 keyway. Product info - this lock features a ¾” outside cylinder diameter with a 5/8” length that will accommodate up to 5/16” thick panels.Easy installation - installation is quick and easy – additional security for your small items and drawers are within reach! It can be mounted to metal or wood, door and/or drawer panels. Durable construction – this drawer and cabinet lock is constructed of diecast and steel components with a stainless steel finish.
More information #ad
Secure cabinet doors and drawers – this u 9941ka lock can be used to secure cabinet doors, drawers and much more. Comes complete - this drawer and cabinet lock comes complete with 3 cams, 2 keys and fasteners. It’s durable and strong, perfect for keeping your small items safe.Brand | Defender Security #ad |
Manufacturer | Prime-Line Products (Home Improvement) #ad |
Height | 5.44 Inches |
Length | 1.13 Inches |
Weight | 0.2 Pounds |
Width | 3.81 Inches |
Part Number | U 9941KA |
Model | U 9941KA |
Warranty | Goods are warranted against manufacturing defects for 1 year. In no case is Prime-Line responsible for user related damage or damage incurred during installation. Warranty is void if products are subjected to abnormal conditions, misapplication or abuse. |
More information #ad
5. Defender Security
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Defender Security U 9590 Lock and Door Reinforcer, 2-3/8” Backset, Add Extra Security to your Home, Help Prevent Forced Entry, Stainless Steel – Fits 1-3/4” Doors, Reinforce and Repair Wood or Metal Doors
#adDefender Security #ad - Backset and 1-3/4in. Helps prevent break-ins. Use on wood or metal doors with mortise or drive-in latches. Additional home security: securing the weak spot of an entry door with a stainless-steel lock and door reinforcer can add additional security to your door and assist with preventing forced entry.Reinforce and repair: reinforce weak spots on entry doors and repair damaged areas with this stainless-steel lock and door reinforcer.
More information #ad
Can be used: this combo lock and door reinforcer can be used on wood or metal doors with mortise or drive-in latches. It also accommodates key-in knob locksets or deadbolts. Reinforces and repairs doors. Accommodates key-in knob locksets or deadbolts. For 2-3/8in. Door thickness. Easy installation: installation is quick and easy, 2-3/8” backset, 2-1/8” bores, and all fasteners are included – extra security and peace of mind can be achieved in just minutes! Fits: 1-3/4” thick doors, 3-7/8” width x 4-1/2” height.
Brand | Defender Security #ad |
Manufacturer | Prime-Line Products #ad |
Height | 4.5 Inches |
Length | 1.75 Inches |
Weight | 0.33 Pounds |
Width | 3.87 Inches |
Part Number | U 9590 |
Model | U 9590 |
Warranty | Goods are warranted against manufacturing defects for 1 year. In no case is Prime-Line responsible for user related damage or damage incurred during installation. Warranty is void if products are subjected to abnormal conditions, misapplication or abuse. |
More information #ad
6. Defender Security
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1-Pack, Satin Nickel Finish, Defender Security U 11316 Swing Bar Door Guard With High Security Auxiliary Lock
#adDefender Security #ad - In case of emergency, the thumb turn will breakaway with approximately 100 lbs. Allows door to be opened slightly for viewing. Of force. Easy to install using included fasteners.More information #ad
Constructed from diecast zinc. Adds security to entry door and helps to prevent forced entry. Addition of thumb turn lock prevents use of emergency release tool to gain access.Brand | Defender Security #ad |
Manufacturer | Prime-Line #ad |
Height | 2.49 Inches |
Length | 4.21 Inches |
Width | 1.25 Inches |
Part Number | U 11316 |
Model | U 11316 |
More information #ad
7. Defender Security
#ad
Classic Bronze Finish, 1-Pack, Defender Security U 11317 Swing Bar Door Guard With High Security Auxiliary Lock
#adDefender Security #ad - Easy to install using included fasteners. Constructed from diecast zinc. Allows door to be opened slightly for viewing. Addition of thumb turn lock prevents use of emergency release tool to gain access.More information #ad
Adds security to entry door and helps to prevent forced entry. Of force. In case of emergency, the thumb turn will breakaway with approximately 100 lbs.Brand | Defender Security #ad |
Manufacturer | Prime-Line #ad |
Height | 2.49 Inches |
Length | 4.21 Inches |
Weight | 0.56 Pounds |
Width | 1.25 Inches |
Part Number | U 11317 |
Model | U 11317 |
More information #ad
8. Defender Security
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3-7/8” Bar Length, Diecast Zinc Construction with a Brushed Chrome Finish, Defender Security U 9901 Swing Bar Lock for Hinged Swing-in Doors – Secondary Security Lock for Door and Home Security
#adDefender Security #ad - Durable construction – this swing bar lock is constructed of zinc diecast with a brushed chrome finish. Easy installation - installation is quick and easy – additional security for your doors are within reach! Installation fasteners, including plastic shim spacers for leveling, are included.Child-safe security device – this swing bar lock can also be installed out of reach of children so they cannot open the door by themselves, providing additional child-safe door security.
More information #ad
It’s strong and durable, sure to last. Security locking device – this u 9901 swing bar lock is a security locking device for hinged swing-in doors, allowing a door to be slightly opened to allow safe viewing and ventilation. Product info – this u 9901 swing bar lock has a long, hinged bar, which folds over the closed door to engage the catch. 3-7/8” bar length x 2-1/2” height.Brand | Defender Security #ad |
Manufacturer | Prime-Line Products (Home Improvement) #ad |
Height | 2.5 Inches |
Length | 0 Inches |
Weight | 0.41 Pounds |
Width | 3.87 Inches |
Part Number | U 9901 |
Model | U 9901 |
Warranty | Goods are warranted against manufacturing defects for 1 year. In no case is Prime-Line responsible for user related damage or damage incurred during installation. Warranty is void if products are subjected to abnormal conditions, misapplication or abuse. |
More information #ad
9. Defender Security
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2-1/4", Defender Security U 10536 Steel Nickel Plated Right Hand Sliding Door Loop Lock
#adDefender Security #ad - Nickel plated finish. Used as a secondary lock on sliding glass doors. 2-1/4 in. Reach. Steel construction.More information #ad
Brand | Defender Security #ad |
Manufacturer | Prime-Line Products (Home Improvement) #ad |
Height | 7.44 Inches |
Length | 1.13 Inches |
Weight | 0.61 Pounds |
Width | 3.81 Inches |
Part Number | U 10536 |
Model | U 10536 |
More information #ad
10. Defender Security
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Steel, Outswing Doors, 2-5/8 in. x 6 in. With 5/16 in. Offset, Defender Security U 9509 Latch Shield, Gray
#adDefender Security #ad - Offset. Tall with 5/16 in. Tall with 5/16 in. Backsets. Accommodates 3 in. Designed for use on doors with 2-3/8 in. Rosettes; 2-5/8 in. Rosettes; 2-5/8 in. Offset. Designed for use on doors with 2-3/8 in.More information #ad
Accommodates 3 in. Gray painted finish. Wide x 6 in. Steel construction. Used on out-swinging doors to secure against forced entry. Used on out-swinging doors to secure against forced entry. Steel construction. Wide x 6 in. Backsets. Gray painted finish.Brand | Defender Security #ad |
Manufacturer | Prime-Line Products #ad |
Height | 6 Inches |
Length | 1.25 Inches |
Weight | 0.6 Pounds |
Width | 2.62 Inches |
Part Number | U 9509 |
Model | U 9509 |
Warranty | Goods are warranted against manufacturing defects for 1 year. In no case is Prime-Line responsible for user related damage or damage incurred during installation. Warranty is void if products are subjected to abnormal conditions, misapplication or abuse. |
More information #ad