No Drill Blinds: No need to drill any holes on your window frame, great for Renter, Landlord, and Home Buyer. Easy to Install in 30 seconds with no tools-no drill, screws, or brackets. Cordless Design:The innovative cordless lift system ensures safety and ease of use. This Roman style Blinds gently filters light into a room,We also provide blackout liner option,you could choose the blackout liner in Customize. For an INSIDE THE WINDOW FRAME MOUNT, give us the exact measurement of the opening to the 1/16th inch and WE will take a 3/8 inch deduction off the exact measurement given, the shade has to be slightly smaller then the opening to fit inside. For an inside mounting 1-3/8inch window depths on the top is required. For an OUTSIDE the window frame mount, measure the WINDOW FRAME width and height. Add 3-6 inches on window frame width and 5-10 inches on window frame height. Install on the frame, shade size could be same or slightly smaller than window size. CUSTOM SIZE: Custom window roman shades are meant to help make your home more comfortable. Offer expert measuring tips and customer service to make sure order the right roman blinds sizes. For one panel,Max Width is 98 inches and Max Height is 96 inches. You will receive a confirmation email after the order completed and reply the information of WINDOW SIZE and MOUNT TYPE within 24 hours. Custom window roman shades are meant to help make your home more comfortable.No need to drill any holes on your window frame, great for Renter, Landlord, and Home Buyer. Easy to Install in 30 seconds with no tools-no drill, screws, or brackets.Offer expert measuring tips and customer service to make sure order the right roman blinds sizes.limited lifetime warranty, and we also cover any damage done during shipping, contact us by AMAZON message with any questions.