Watershed Innovations HydraTarp 16 Ft. X 20 Ft. Premium Heavy Duty Waterproof Tarp - 18mil Thick - White/Brown Reversible Tarp with D-Rings 16ft x 20ft is up for auction in Patio, Lawn & Garden. The current bid is $9.50, 90% below the $94.00 MSRP, in As Is condition. This auction has ended — similar items appear in live auctions regularly.