Black Window Sash Jammer, Lokatall Window Lock Jammers French Doors Security Lock, Locking Sash Jammer Blocker Zinc Alloy Window Buckle Home Security Jammer Locks for UPVC/PVC Doors & Windows, 2 Pack

Mi occorrevano per una porta finestra da chiudersi occasionalmente alle spalle dall esterno. Fanno egregiamente il loro dovere e paiono di buona fattura, ad un prezzo onesto. Ok!

I have fitted these to the front door of my wife's hair salon as an extra layer of security that often gets overlooked by insurance companies. My joinery background will tell you that most upvc door locks are susceptible to risk no matter how many levels of tumblers the lock has. Parrot locking through bolts etc... it still comes down to the lock is a weakness.Add sash jammer locks to the frame and all the lock picking,bumping or whatever, short of taking a sledge hammer or going through one of the panels... that door is NOT going to open easily or quietlyIdeal security for French doors or anywhere where the upvc door opens internally, totally undetectable from the outside of the property yet very easily installed

Sadly I didn't try to install these until the return window had ended.One of them is fine and opens and closes easily. The other won't move at all, so I can't use these. I'll have to buy them from somewhere else. Very disappointed.