guyiss generator covers. 28"lx20"wx20"h running generator cover, 900d+210d 100% waterproof and tear-resistant oxford cloth. fits most 3000-5000 watt generators. black black-28"lx20"wx20"h is up for auction in Patio, Lawn & Garden. The current bid is $1.00, 98% below the $40.66 MSRP, in As Is condition. This auction has ended — similar items appear in live auctions regularly.