Secure direct access. Window grilles to protect basement and ground floor windows from break-in attempts. Criminals often take advantage of direct access to break into your home. Basement and ground floor windows, if inadequately protected, make it easy for them. Secure these windows with a reliable grille. The window grille is adjustable in width to fit the specific window. Vertical installation or the combination of two grilles stacked on top of each other is also easily possible. The material used is particularly weather-resistant. The corrosion resistance can be further enhanced with metal protective coatings.