Beautiful information, Thank-you. However when shops say 50” do they refer to actual length or width? I’m totally confused about my LG TV which gave up & instead of repair I want to buy new but the same size as the old one we measured from left to right at the bottom and it say 49.8” am I doing right because if I order from Walmart 50” and open the box & it’s not same size as my old one I don’t want the hassle of boxing & returning it, too much waste of time