To measure your day/night shades accurately for your 2002 Newmar Kountry Star, begin by measuring the exact width of the shade from the outside edge of the left mounting bracket to the outside edge of the right bracket, rather than just the window width. For the height, measure from the top mounting location straight down to where you want the shade to stop, typically at the bottom of the window frame or slightly below if that matches your current setup. It's important to measure each window individually, as sizes can vary even within the same RV model. If you still have the original shades, removing one and measuring its total width and drop can help confirm your measurements. Providing photos of your current setup can also assist in offering more personalized guidance. Following these steps will help ensure your replacement shades fit perfectly and function smoothly.