Sash Jammers

Brilliant. Works great. I fitted them to my upvc window, there’s no fitting instructions but it was fairly simple. I positioned them on the frame of the window opening and used a 3mm drill bit to make the holes for the screws. You need about 4-5mm clearance from the edge of the frame to allow for the way the window opens (windows open in an arc). There’s plenty of packers/spacers that come with them so should be enough for most window frame thicknesses. The screws are self tapping and do not need to be over tightened ( hand tight works well). There’s also some caps to cover the holes for the screws. The keys are a bit fiddly to use but a drop of WD40 helped with that.

Very easy to fit - no drilling just use the self tapping screws provided. Keys can be removed when jammer is locked- all good.

I actually use these to hold a sash window OPEN. The cords have snapped and access boxes have about 100 years of paint on them. We has a loop and eye before but it wasn't very secure. This works great, screw to the frame open the window then lock in place You have to unlock it to close the window so safe for our dog to put her head out!

Easy to fit, work's well

Done the job grand!

As expected

Bought the product to secure a friends window who's locking mech had broken as a temp fix till new window funds are available, easy to install, "Riv-type Nuts" supplied are a little cumbersome (proper Riv Nuts has a set tool (but at this price you aren't getting one of those! :-) ) ) Ended up jamming screwdriver in to slot to stop spinning in window frame still started enough to grab. Overall easy fit, do what I needed em to , can't complain at the price

Very easy to fit even without any instructions in the box. Good for extra security and if placed higher than the door handle it acts as a deterrent for young children to open the door

Leicht anzubauen gut einstellbar für unterschiedliche Fensterstärken

Muy buena calidad, fácil instalación,se ve muy bien una vez instalado, mucho mejor que esas rejas de acordeón que te parece de estar en una cárcel,ojo que no es algo de max seguridad pero lo pone mas difícil y junto con la alarma más complicado todavía,lo usé para una puerta de aluminio que da a una terraza de un ático.Los pack traen 4 bloqueadores.

Super produit excellente qualité

Très satisfaite de ces lockers de fenêtre. Design assez fins.

Introvabili altrove, di buona fattura