The finished opening dimensions for the CRL SH36480XA Satin Anodized Sharyn 36" x 48" OX Frameless Pass-Thru are 36 inches wide by 48 inches high. This modern “frameless” pass-thru window features a sleek appearance and is designed as an alternative to traditional framed pass-thru windows. Here are some additional details about this product: Frame Depth: 2 inches (50.8 mm) Glazing Type: 1/4 inch (6 mm) clear tempered glass Handle Type: Self-latching Finish/Color: Satin Anodized Header Cut: 35-15/16 inches Height: 48 inches (1219.2 mm) Top-Hung Roller Assemblies: Two per sliding panel Bottom Guides: Three included Locking Mechanism: Push-button lock included (Thru-Glass Mounted Keyed Lock available separately for custom windows) Rubber Bumpers: Included for soft closing of the window This pass-thru window is a great choice for various service conditions, and it offers a clean, contemporary look. If you need a quick solution, pre-glazed stock models are available, or you can opt for custom windows with clear tempered glass or unglazed options