The basement becomes safer with a grid cover security system featuring a variable chain, ideal for plastic light wells. Basement wells are popular among burglars as they often provide easy access to a home. Therefore, secure your wells with a reliable grid cover security system. This sturdy 60-centimeter-long chain with large holding plates can be flexibly mounted on the house wall. After installation, the regulations for escape route security will still be adhered to. The security system can be locked from the outside with a key.