Home Hardware
Relaxdays Burglary Protection Window Grille Pull-Out Galvanized Steel Security Bars, Metal, Grey
Pull-out: Freely adjustable to fit your individual window size - Simply push the sides together until it is the right size for your window - HxWxD: approx. 450 x 700-1050 x 35 mm Anti-burglary: Protect your basement, ground floor, easy-to-reach, etc....
https://www.bizrate.co.uk/homehardware/relaxdays-burglary-protection-window-grille-oid12973048188.html