Window Door Limiter: The cable lock is a simple device that limits window opening. Ideal for home and commercial security. Easy to Use: These PVC window cable locks come complete with screws. You don't need to buy them separately. Easy to install on your door or window.With Keys: When the cable is in place and the window opening distance is limited, using the cable key, you can easily be pulled out of a end and the window can be fully opened. Function: These window safety limiters are for child safety, pet safety and to prevent deterrents from burglars and intruders. Perfect for: 4 Piece Window Door Limiter is a nice kit perfect for home, public and commercial applications. Length : 185mm. Suitable for most types of windows and small doors. Description: Top quality product. When the cable is in place, the window opening distance is limited, using the key, the cable can be removed from one end and the window can be fully opened. Suitable for most types of windows and small doors. Perfect for domestic, public and commercial applications. Features: 1. Universal resistance for window and door. 2. Made of UPVC, wood, aluminum and metal. 3. MRSA repellent coating. 4. Can be mounted on all materials. 5. Can be used in hospitals, hotels, homes and schools. 6. Suitable for all window types. 7. Deters burglars and intruders. 8. Designed specifically for child safety. Features: Type: Window Door Opener. Window Style: Double Hung. Screws: Included. Main Color: White. Size: 180mm. Material: Zinc Alloy, UPVC. Quantity: 4 pieces.Suitable for: UPVC, wood, aluminum and metal. Features: Keyed, Child Safety Lock. Package Contents: 4 x Window Door Openers.