Bay windows can be beautiful. Finding a window covering that will not only enhance your window but also fit properly can be difficult. Without a proper fit, your window covering will not function correctly. Measuring for window treatments in general can be scary. We have an easy-to-follow measuring guide for all of our window treatments using the following link /how-to-measure. Bay windows are a little different, so here are a few extra steps to ensure you're measuring like a pro! Cut 6 pieces of cardboard or use business cards. Determine where your mounting surface will be and make sure there is enough space for the brackets. Position the pieces of cardboard so the front edges meet, as if they are the actual blind headrails. Make a pencil mark at the back of the cardboard where the headrail will end. If you do not wish to mark on the woodwork, put a small piece of masking tape at the location and mark on it. Measure the left and right blinds from the place you made the mark to the outside where you want the headrail to end. Measure the center blind between the marks.Round all measurements to the nearest 1/8