The locking devices below offered by Moore Pet Supplies provide you with premium security when used with our Patio Pet Door or a Window Mounted Pet Doors. Often, generic, low-cost locks may be included by the manufacturer when purchasing a product. We have through the years been asked by many customers for higher quality security locks for the products that they purchase. We are pleased to offer the items below as they are well designed, manufactured and reliable. They also provide you with options that are not available with utility locks automatically included with many products.