Mr. Goodbar S102 A 29-42 provides reliable home security by preventing unauthorized entry through windows. Made for windows measuring 29 to 42 inches wide, it features a sturdy grille that can be locked on either the left or right side for added convenience. Its versatile design allows for use in various rooms, including bedrooms and basements, and the included Keyless Quick Release Locking System ensures a quick escape in emergencies. Installation is simple with the provided instructions and requires basic tools and materials.