Extra Security that's simple and easy to fit!;Sash Blockers are designed to provide additional security for your uPVC doors and windows. They are easy to fit and easy to operate too- just a twist of the Jammer Arm will lock or release the sash.;High quality cast zinc construction;Durable die cast finish in White. Recommended by insurance companies.;Easy to use- just 5 minutes! Easy to use- just flick on and off! Versatile- can be used on numerous windows& doors.

• 4pcs Sash Blocker Window Jammer - White - Extra Security for UPVC Door / Window Restrictor Lock

4pcs Sash Blocker Window Jammer - White - Extra Security for UPVC Door / Window Restrictor LockRayinblue