9'x12' Canvas Tarp 21 oz color:Olivedrab You can hammer these into

You can hammer these into the ground and against your board on the side

®'s Heavy Duty 16 oz Canvas Tarps are designed for outdoor use as the treatment gives off an odor and may leave stains/residue

When water freezes and expands

15 oz prior to treatment

9'x12' Canvas Tarp 21 oz color:Olivedrab You can hammer these intoCanvas Tarps Super Heavy Duty Cotton Canvas Tarp 21 oz Per Square Yard Heavy Duty Thread Gage 100% Duck cotton canvas Double stitched sides for extra strength 15 oz before treatment, 21 oz after treatment Silicon treated for water, mildew, and weather resistance Available in olive drab (dark grayish green) Heavy duty brass rust resistant grommets approx. every 24 inches Please contact us for any other sizes Please note that the finished size of canvas