For Inside Mount Installations(Inside the window frame) - Order your exact window size. A 0.5-inch deduction will be taken on the width to allow for mounting clearance for a precise fit inside the window frame For Outside Mount Installations(Outside the window frame) - Recommended to add 4 Inches to the width (2-inches on both sides) for optimal light control and privacy Includes window blinds, matching 2.5 inch valance, 2 mounting brackets, 1 mounting hardware kit, and instruction manual Tools required for installation: measuring tape, pencil, level, Philips head screwdriver, and/or power drill with 1/16" drill bit Now available in multiple sizes and colors from Better Homes & Gardens Questions or missing parts? Please call our customer hotline at 1-888-615-0642