not sure whether it is the 18 or 22' version, but it was massive on our old 19 footer, and kept our 25'OAL boat dry all winter. The tarp is getting old, still works but a new tarp is cheap and available at many stores (it doesn't have to be the Navigloo tarp) in Port Alberni ad will be removed when item sells price is firm, these are $500+ at Canadian Tire