Best Sliding Windows. Defender-Security brand. New releases 2021

Defender Security U 10547 Sliding Window & Sliding Door Lock, 1-1/2 in., Diecast, White, For Vinyl Windows & Doors

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Defender Security U 10547 Sliding Window & Sliding Door Lock, 1-1/2 in., Diecast, White, For Vinyl Windows & Doors

Current price: 7.07 USD

Saving: $1.92 (21%)


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Height: 5.438 Inches

Length: 1.5 Inches

Width: 1 Inches

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.

  • Diecast construction
  • White painted finish
  • Secondary security lock for vinyl patio sliding doors, but also used by many on horizontal and vertical sliding vinyl windows
  • Prime-Line Products U 10547 Sliding Window & Sliding Door Lock, 1-1/2 in., Diecast, White, FOR VINYL WINDOWS & PATIO SLIDING DOORS

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Defender Security U 9831 Sliding Window Lock, Edge Mount, White

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Defender Security U 9831 Sliding Window Lock, Edge Mount, White

Current price: 5.49 USD


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Height: 2.75 Inches

Length: 0.75 Inches

Width: 0.5 Inches

Weight: 0.09 Pounds

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.

  • Diecast construction
  • White painted finish
  • Secondary security lock for vinyl patio sliding doors, but also used by many on horizontal and vertical sliding vinyl windows
  • Prime-Line Products U 10547 Sliding Window & Sliding Door Lock, 1-1/2 in., Diecast, White, FOR VINYL WINDOWS & PATIO SLIDING DOORS
  • Easy to install
  • Fits outside sliding patio doors
  • White finish
  • Secondary bolt lock

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Defender Security U 9839 Keyed Sliding Window Lock, White Finish

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Defender Security U 9839 Keyed Sliding Window Lock, White Finish

Current price: 3.45 USD

Saving: $6.40 (65%)


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Height: 0.43 Inches

Length: 1.37 Inches

Width: 1.71 Inches

Weight: 0.24 Pounds

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.

  • Diecast construction
  • White painted finish
  • Secondary security lock for vinyl patio sliding doors, but also used by many on horizontal and vertical sliding vinyl windows
  • Prime-Line Products U 10547 Sliding Window & Sliding Door Lock, 1-1/2 in., Diecast, White, FOR VINYL WINDOWS & PATIO SLIDING DOORS
  • Easy to install
  • Fits outside sliding patio doors
  • White finish
  • Secondary bolt lock
  • Bolt locks into 1/4 in. hole drilled into fin
  • Easy to install
  • Securely locks window in closed or ventilating position
  • Painted diecast housing

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Defender Security S 4071 Sliding Window Night Lock Pin, 1-5/16 Inch, Steel Pin, Pack of 1,Aluminum

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Defender Security S 4071 Sliding Window Night Lock Pin, 1-5/16 Inch, Steel Pin, Pack of 1,Aluminum

Current price: 2.92 USD


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Height: 5.438 Inches

Length: 0.688 Inches

Width: 3.813 Inches

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.

  • Diecast construction
  • White painted finish
  • Secondary security lock for vinyl patio sliding doors, but also used by many on horizontal and vertical sliding vinyl windows
  • Prime-Line Products U 10547 Sliding Window & Sliding Door Lock, 1-1/2 in., Diecast, White, FOR VINYL WINDOWS & PATIO SLIDING DOORS
  • Easy to install
  • Fits outside sliding patio doors
  • White finish
  • Secondary bolt lock
  • Bolt locks into 1/4 in. hole drilled into fin
  • Easy to install
  • Securely locks window in closed or ventilating position
  • Painted diecast housing
  • For further dimensional information, please see the Line Drawing
  • A Philips head screw driver, and drill with a 1/8 in. bit is required for installation
  • Mounting hardware included
  • Features its own holder when not in use
  • Case hardened steel with an aluminum finish
  • 1/8 in. diameter and 1-5/16 in. length shaft
  • Secures the door or window in a closed or ventilating position
  • Used on sliding patio doors, casement locking handles and narrow rail windows

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Defender Security U 9821 Sliding Window Lock, No-Mar, White Finish,(Pack of 2)

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Defender Security U 9821 Sliding Window Lock, No-Mar, White Finish,(Pack of 2)

Current price: 2.98 USD


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Height: 0.56 Inches

Length: 0.87 Inches

Width: 0.87 Inches

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.

  • Diecast construction
  • White painted finish
  • Secondary security lock for vinyl patio sliding doors, but also used by many on horizontal and vertical sliding vinyl windows
  • Prime-Line Products U 10547 Sliding Window & Sliding Door Lock, 1-1/2 in., Diecast, White, FOR VINYL WINDOWS & PATIO SLIDING DOORS
  • Easy to install
  • Fits outside sliding patio doors
  • White finish
  • Secondary bolt lock
  • Bolt locks into 1/4 in. hole drilled into fin
  • Easy to install
  • Securely locks window in closed or ventilating position
  • Painted diecast housing
  • For further dimensional information, please see the Line Drawing
  • A Philips head screw driver, and drill with a 1/8 in. bit is required for installation
  • Mounting hardware included
  • Features its own holder when not in use
  • Case hardened steel with an aluminum finish
  • 1/8 in. diameter and 1-5/16 in. length shaft
  • Secures the door or window in a closed or ventilating position
  • Used on sliding patio doors, casement locking handles and narrow rail windows
  • Easy to install
  • Fits wide and narrow type tracks
  • Securely locks window in closed or ventilating position
  • Extruded aluminum with no-mar vinyl inserts to protect track

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Defender Security S 4028 Anti-Lift Sliding Door and Window Bumpers,(Pack of 9)

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Defender Security S 4028 Anti-Lift Sliding Door and Window Bumpers,(Pack of 9)

Current price: 3.29 USD

Saving: $4.39 (57%)


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Height: 0.5 Inches

Length: 0.37 Inches

Width: 0.5 Inches

  • Diecast construction
  • White painted finish
  • Secondary security lock for vinyl patio sliding doors, but also used by many on horizontal and vertical sliding vinyl windows
  • Prime-Line Products U 10547 Sliding Window & Sliding Door Lock, 1-1/2 in., Diecast, White, FOR VINYL WINDOWS & PATIO SLIDING DOORS
  • Easy to install
  • Fits outside sliding patio doors
  • White finish
  • Secondary bolt lock
  • Bolt locks into 1/4 in. hole drilled into fin
  • Easy to install
  • Securely locks window in closed or ventilating position
  • Painted diecast housing
  • For further dimensional information, please see the Line Drawing
  • A Philips head screw driver, and drill with a 1/8 in. bit is required for installation
  • Mounting hardware included
  • Features its own holder when not in use
  • Case hardened steel with an aluminum finish
  • 1/8 in. diameter and 1-5/16 in. length shaft
  • Secures the door or window in a closed or ventilating position
  • Used on sliding patio doors, casement locking handles and narrow rail windows
  • Easy to install
  • Fits wide and narrow type tracks
  • Securely locks window in closed or ventilating position
  • Extruded aluminum with no-mar vinyl inserts to protect track
  • Easy To Install
  • Reduces the installation gap at the top of the frame
  • Deter Burglars From Lifting Out Your Sliding Glass Door

More Info

Defender Security U 9838 Sliding Window Keyed Lock, Aluminum Finish

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Defender Security U 9838 Sliding Window Keyed Lock, Aluminum Finish

Current price: 9.74 USD


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Height: 0.43 Inches

Length: 1.37 Inches

Width: 1.71 Inches

Weight: 0.2 Pounds

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.

  • Diecast construction
  • White painted finish
  • Secondary security lock for vinyl patio sliding doors, but also used by many on horizontal and vertical sliding vinyl windows
  • Prime-Line Products U 10547 Sliding Window & Sliding Door Lock, 1-1/2 in., Diecast, White, FOR VINYL WINDOWS & PATIO SLIDING DOORS
  • Easy to install
  • Fits outside sliding patio doors
  • White finish
  • Secondary bolt lock
  • Bolt locks into 1/4 in. hole drilled into fin
  • Easy to install
  • Securely locks window in closed or ventilating position
  • Painted diecast housing
  • For further dimensional information, please see the Line Drawing
  • A Philips head screw driver, and drill with a 1/8 in. bit is required for installation
  • Mounting hardware included
  • Features its own holder when not in use
  • Case hardened steel with an aluminum finish
  • 1/8 in. diameter and 1-5/16 in. length shaft
  • Secures the door or window in a closed or ventilating position
  • Used on sliding patio doors, casement locking handles and narrow rail windows
  • Easy to install
  • Fits wide and narrow type tracks
  • Securely locks window in closed or ventilating position
  • Extruded aluminum with no-mar vinyl inserts to protect track
  • Easy To Install
  • Reduces the installation gap at the top of the frame
  • Deter Burglars From Lifting Out Your Sliding Glass Door
  • Verify dimensions against line drawing image before ordering
  • This lock is not compatible with vinyl windows
  • Fits window fins up to 3/32 in. thick
  • Easy to install. Bolt locks into 1/4 in. hole drilled into fin
  • Securely locks window in closed or ventilating position
  • Painted die cast housing

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Defender Security S 4026 Sliding Window "Push Bolt" Lock, Aluminum Finish

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Defender Security S 4026 Sliding Window

Current price: 3.99 USD


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Height: 1.25 Inches

Length: 1.125 Inches

Width: 1 Inches

Weight: 0.02 Pounds

  • Diecast construction
  • White painted finish
  • Secondary security lock for vinyl patio sliding doors, but also used by many on horizontal and vertical sliding vinyl windows
  • Prime-Line Products U 10547 Sliding Window & Sliding Door Lock, 1-1/2 in., Diecast, White, FOR VINYL WINDOWS & PATIO SLIDING DOORS
  • Easy to install
  • Fits outside sliding patio doors
  • White finish
  • Secondary bolt lock
  • Bolt locks into 1/4 in. hole drilled into fin
  • Easy to install
  • Securely locks window in closed or ventilating position
  • Painted diecast housing
  • For further dimensional information, please see the Line Drawing
  • A Philips head screw driver, and drill with a 1/8 in. bit is required for installation
  • Mounting hardware included
  • Features its own holder when not in use
  • Case hardened steel with an aluminum finish
  • 1/8 in. diameter and 1-5/16 in. length shaft
  • Secures the door or window in a closed or ventilating position
  • Used on sliding patio doors, casement locking handles and narrow rail windows
  • Easy to install
  • Fits wide and narrow type tracks
  • Securely locks window in closed or ventilating position
  • Extruded aluminum with no-mar vinyl inserts to protect track
  • Easy To Install
  • Reduces the installation gap at the top of the frame
  • Deter Burglars From Lifting Out Your Sliding Glass Door
  • Verify dimensions against line drawing image before ordering
  • This lock is not compatible with vinyl windows
  • Fits window fins up to 3/32 in. thick
  • Easy to install. Bolt locks into 1/4 in. hole drilled into fin
  • Securely locks window in closed or ventilating position
  • Painted die cast housing
  • Includes Fasteners
  • Steel Housing. Die Cast Bolt
  • Easy To Install
  • Installs On Bottom Or Side Rail Of Horizontal Or Vertical Sliding Aluminum Windows

More Info

Defender Security U 9809 Sliding Window Lock for Vinyl Windows – Easy Installation to Keep Windows Securely Closed – White Diecast Construction (Pack of 2)

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Search only Defender Security brand name
Defender Security U 9809 Sliding Window Lock for Vinyl Windows – Easy Installation to Keep Windows Securely Closed – White Diecast Construction (Pack of 2)

Current price: 7.95 USD

Saving: $2.04 (20%)


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Height: 5.44 Inches

Length: 1.18 Inches

Width: 1 Inches

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.

  • Diecast construction
  • White painted finish
  • Secondary security lock for vinyl patio sliding doors, but also used by many on horizontal and vertical sliding vinyl windows
  • Prime-Line Products U 10547 Sliding Window & Sliding Door Lock, 1-1/2 in., Diecast, White, FOR VINYL WINDOWS & PATIO SLIDING DOORS
  • Easy to install
  • Fits outside sliding patio doors
  • White finish
  • Secondary bolt lock
  • Bolt locks into 1/4 in. hole drilled into fin
  • Easy to install
  • Securely locks window in closed or ventilating position
  • Painted diecast housing
  • For further dimensional information, please see the Line Drawing
  • A Philips head screw driver, and drill with a 1/8 in. bit is required for installation
  • Mounting hardware included
  • Features its own holder when not in use
  • Case hardened steel with an aluminum finish
  • 1/8 in. diameter and 1-5/16 in. length shaft
  • Secures the door or window in a closed or ventilating position
  • Used on sliding patio doors, casement locking handles and narrow rail windows
  • Easy to install
  • Fits wide and narrow type tracks
  • Securely locks window in closed or ventilating position
  • Extruded aluminum with no-mar vinyl inserts to protect track
  • Easy To Install
  • Reduces the installation gap at the top of the frame
  • Deter Burglars From Lifting Out Your Sliding Glass Door
  • Verify dimensions against line drawing image before ordering
  • This lock is not compatible with vinyl windows
  • Fits window fins up to 3/32 in. thick
  • Easy to install. Bolt locks into 1/4 in. hole drilled into fin
  • Securely locks window in closed or ventilating position
  • Painted die cast housing
  • Includes Fasteners
  • Steel Housing. Die Cast Bolt
  • Easy To Install
  • Installs On Bottom Or Side Rail Of Horizontal Or Vertical Sliding Aluminum Windows
  • 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”.
  • 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.
  • 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.
  • SECURELY LOCK WINDOWS – These U 9809 sliding window locks for vinyl windows help keep them securely closed. The locks feature an adjustable jaw that has a “vise-like” grip, and they are capable of opening up to ½” wide.
  • EACH PACK INCLUDES – (2) Adjustable jaw that fits all vinyl frame rail thicknesses from 1/16" up to 1/2 in. thick. "Vise like" grip holds securely and will not mar frame. Allows window to lock in ventilating position; cam style locking lever; no tools required. This is for Vinyl Windows only.

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Defender Security U 9819 Sliding Window Security Lock, Economy, Aluminum,(Pack of 4) , Silver

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Search only Defender Security brand name
Defender Security U 9819 Sliding Window Security Lock, Economy, Aluminum,(Pack of 4) , Silver

Current price: 3.81 USD

Saving: $1.38 (27%)


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Height: 0.43 Inches

Length: 0.875 Inches

Width: 1 Inches

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.

  • Diecast construction
  • White painted finish
  • Secondary security lock for vinyl patio sliding doors, but also used by many on horizontal and vertical sliding vinyl windows
  • Prime-Line Products U 10547 Sliding Window & Sliding Door Lock, 1-1/2 in., Diecast, White, FOR VINYL WINDOWS & PATIO SLIDING DOORS
  • Easy to install
  • Fits outside sliding patio doors
  • White finish
  • Secondary bolt lock
  • Bolt locks into 1/4 in. hole drilled into fin
  • Easy to install
  • Securely locks window in closed or ventilating position
  • Painted diecast housing
  • For further dimensional information, please see the Line Drawing
  • A Philips head screw driver, and drill with a 1/8 in. bit is required for installation
  • Mounting hardware included
  • Features its own holder when not in use
  • Case hardened steel with an aluminum finish
  • 1/8 in. diameter and 1-5/16 in. length shaft
  • Secures the door or window in a closed or ventilating position
  • Used on sliding patio doors, casement locking handles and narrow rail windows
  • Easy to install
  • Fits wide and narrow type tracks
  • Securely locks window in closed or ventilating position
  • Extruded aluminum with no-mar vinyl inserts to protect track
  • Easy To Install
  • Reduces the installation gap at the top of the frame
  • Deter Burglars From Lifting Out Your Sliding Glass Door
  • Verify dimensions against line drawing image before ordering
  • This lock is not compatible with vinyl windows
  • Fits window fins up to 3/32 in. thick
  • Easy to install. Bolt locks into 1/4 in. hole drilled into fin
  • Securely locks window in closed or ventilating position
  • Painted die cast housing
  • Includes Fasteners
  • Steel Housing. Die Cast Bolt
  • Easy To Install
  • Installs On Bottom Or Side Rail Of Horizontal Or Vertical Sliding Aluminum Windows
  • 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”.
  • 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.
  • 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.
  • SECURELY LOCK WINDOWS – These U 9809 sliding window locks for vinyl windows help keep them securely closed. The locks feature an adjustable jaw that has a “vise-like” grip, and they are capable of opening up to ½” wide.
  • EACH PACK INCLUDES – (2) Adjustable jaw that fits all vinyl frame rail thicknesses from 1/16" up to 1/2 in. thick. "Vise like" grip holds securely and will not mar frame. Allows window to lock in ventilating position; cam style locking lever; no tools required. This is for Vinyl Windows only.
  • Easy to Install
  • Allows window to lock in ventilating position
  • Fits up to 1/8 In. thick rails
  • Secondary Lock

More Info

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