The value of the front cap insulation is not just to complete the all-around insulation of the unit. It also acts as a defense to the elements while driving down the road at high speeds. With elements, like rain, snow, and wind of many different temperatures, it's important to have a well-protected and insulated front cap. We provide for this specific instance with a radiant barrier, 2 layers of batting insulation and a waterproof Darco material, and the 1 piece fiberglass cap. This provides exceptional protection for your luxury fifth wheel while traveling.