The Adjust-A-Lock Keeper is designed specifically for recessed 1 inch roller doors, offering a practical and efficient solution. Its zinc finished construction ensures durability and corrosion resistance, making it suitable for various door applications. With 5/8 inch of vertical adjustment, this product provides flexibility and ease of use. Whether for residential or commercial use, the Adjust-A-Lock Keeper fits most recessed 1 inch roller doors, making it a reliable choice for securing your doors.