8 Pack Sash Jammer Blocker - Door & Window Lock Anti Theft - Additional Home Security for PVC/uPVC Windows and Doors - White

• Material: The window security anti-theft lock is made of solid cast zinc structure, with a durable powder-coated surface, wear-resistant, smooth white surface, and can be used for a long time. You will get 8 window locks and matching screws.
• Security: Installing a sash jammer locks on the window can protect your children and pets, and also prevent thieves from entering your home, making your stay safer and more comfortable.
• Easy to Install and Use:The sash stopper can be easily installed using the included fixing screws, just follow the installation instructions provided. Just twist the interference arm to lock or release the window sash.
• Application: These Window Latch are suitable for PVC-u and wood/composite doors and windows. It is also suitable for vertical sliding, single-hung and double-hung vinyl windows.
• Multiple Functions: you can use vertical sliding sash lock on windows and sliding doors; The window sash lock set can also be given to your friends and family as an indispensable family gift to provide security for their lives, which can easily get their welcome and love

1. What are Sash Jammers? Sash Jammers are commonly used as additional security to secure uPVC doors or windows and are available as locking and non-locking options. A Sash jammer will prevent a door or window from opening should the lock be bypassed by a thief. 2. What are the advantages of Sash Jammers? Sash Jammers are a cheap way to improve your uPVC door or window security Easy to fit Fits most types of doors and windows Will fit inward and outward opening doors and windows Reversible, suitable for both left and right handed doors Can prevent door or window from opening for any attempted break-in 3. What Type of Doors and Windows Can Jammers be Fitted to? uPVC Doors and windows Wooden and Composite doors Patio Doors and French Doors 4. How many Sash Jammers Should I Fit on My Door or Window? Single doors will normally have two sash jammers fitted – one fitted at the top and one fitted at the bottom of the door. Small windows will only require one sash jammer to be fitted. Patio doors and French Doors will have 4 fitted on each door, two at the top and two at the bottom