Most caravans and motorhomes have one or more 14" hatches / skylights on the roof. Some of these have 12v fans in them from extracting air from the bathroom. The lids only have a lifespan of a couple of years at most, and have a bad habit of becoming brittle and flying off while driving.
We stock a range of caravan 14" hatches / skylights and matching lids for common brands like Jensen, Elixir and Hengs