20'x30' Canvas Tarp 18 oz

Canvas Tarps - Heavy Duty Cotton Canvas Tarp 18 oz Per Square Yard - Heavy Duty Thread Gage  100% Duck cotton canvas Double-stitched sides for extra strength 12 oz before treatment, 18 oz after treatment Silicon-treated for water, mildew, and weather resistance UV, fade and tear resistant Available in brown, green, olive drab, and tan Heavy-duty brass rust-resistant grommets approx. every 24 inches Available sizes range from 5'x7' to 50'x50' Please contact us for any other sizes Please note that the finished size of canvas tarps is approx. 6"-9" or 5-7% smaller than the listed size after the edges are folded over and hemmed.  Note: Canvas material is not waterproof, so it cannot withstand long-term water penetration.If much water accumulates on the tarp over time, it will gradually seep through.