The WS6 security door chain complies with the TS003:2012 DHF standard for door chains and limiters, and is Secured by Design approved. This door chain is simple to install and easy to use, holding the door in a slightly open position whilst restraining against a forced attack. Also helps you identify a caller before the door is fully released. This Yale YALVWS6CH can be fiited in less than 2 minutes so you get instant full protection and security. The WS6 is finished in Chrome and carries a 2 Year Guarantee. https://elecena.pl/product/27145790/yale-locks-ws6-security-door-chain-chrome-finish 2024-11-06 https://elecena.pl/product/27145790/yale-locks-ws6-security-door-chain-chrome-finish 2025-03-06 https://elecena.pl/product/27145790/yale-locks-ws6-security-door-chain-chrome-finish 2025-03-17 https://elecena.pl/product/27145790/yale-locks-ws6-security-door-chain-chrome-finish 2025-03-28