Extra security bolt lock for patio double french doors B Intrudaloc is the latest device in home security for double patio/french doors, aimed to help prevent criminals entering your home. No DIY skills or tools required and can be fitted and removed in seconds. With a burglary happening around every minute is your home really safe? A massive percentage of break-ins happen at the rear of the property, hence patio doors been a popular target. Intrudaloc will not only help the security of your doors but also act as a deterrent. Intrudaloc helps prevent lock bumping, lock snapping and also help prevent the doors been forced open. Figures also show slowing a burglar down by 3 minutes is enough to make them leave your property empty handed! Can you really put a price on security! Don't let unwanted visitors make your home a crime scene! LENGTH OVERALL WHEN OPEN 410MM CLOSED POSITION 310MM SIZE CAN BE ADJUSTED Please select the required finish from the above drop down bar