Designs to provide locking mechanism for both vertical and horizontal sliding window. Made from Stainless Steel, these sash feature type locking mechanism that ensures secure by engaging the checkrail of both the innermosts and outermost sashes. For homeowners look to upgrades their window security, these sash for anyone seek updates to their home’s hardware. These sash suitable for most room with sliding window. Package includes: 3Pcs Window Sash