Place a sidelight beside an entry to add much more light and to expand your view from the inside of your home. Sidelights are treated differently than transom frames. Sidelights are available only up to 1 ½ hours. Transom frames sit above the door to fill your entryway with natural light. Transom frames can carry up to a 3-hour label, just like 3-sided frames. Our staff will be more than happy to help you.