Heavy Duty 6 mil plastic sheeting is strong and durable Ideal thickness for gardening, landscaping, weed barrier and yard Multi use for DIY and commercial use Made to last - Extra strength thickness for withstanding wind, rain, cold and heat 4 Year Guarantee - Made to last and we guarantee this 6 mil black plastic for 4 years Rocky Mountain Goods 6 Mil Black Plastic Sheeting is heavy duty black plastic for gardening, landscaping, home, commercial or many other uses. The thick 6 mil thickness is ideal for preventing weeds or thick enough for faux walls during construction. This black plastic tarp is made to last and comes with a 4 year guarantee.