The Aluminum Sliding Window Security without drill installation with aluminum construction, providing reinforced security against forced entry while maintaining window ventilation capabilities Ideal for homeowners with children or pet owners, these accidental window openings while allowing controlled airflows for enhances indoor Featuring a steel thumbscrew and adjustable design, this 4 pack set secures fit metal sliding window with rails up to 3 / 16 " wide, ensuring great across various window types Perfect for residential and commercial applications, the resistant aluminum maintain clean sightlines while securing sliding window in both closed and partially open positions The silver design complements modern window frame without obstructing view, offering discreets yet effective security against unauthorized access through horizontal sliding window, Manufacturer: LXJLXD