Natural Canvas and Duck Canvas with rust resistant brass grommets on all corners and every 2 feet.
Natural canvas and duck canvas materials include: 10 oz natural canvas, #12 duck canvas, #10 duck canvas, #8 duck canvas, #4 duck canvas.
Natural canvas and duck canvas tarps are not treated with water resistant chemicals and are not waterproof or water resistant. Natural canvas covers and duck canvas covers can be used for a wide range of applications. They are painters and artists' favorite. Artists and schools use natural canvas tarps and duck canvas tarps for large paint projects.
These are non water resistant treated natural canvas tarps. If you need water resistant or flame retardant canvas tarps or canvas covers, check out our Canvas Tarps category.
Why the numbers for duck canvas? - explanation from Wikipedia