Lewis Mfg. Rig Weather Tarp Covers and Barriers are custom-designed specifically for your rig substructure, crows nest, outbuilding or equipment for reliable protection from the elements. Rig Covers are a very cost effective way to provide weather barrier shelter and protection against the harsh environment in all seasons. Lewis Heavy-Duty WeatherTarp™ brand Canvas Products are manufactured from the Finest and Toughest Rubberized Nylon canvas material. More info lewismfg.com/product/rig-hous...