Heavy duty 12 / 18 oz fire retardant canvas fabric, aka, flame retardant cotton canvas fabric is water resistant and flame retardant. Fabric Weight: 18 oz after treatment, 12 oz before treatment. Fire retardant canvas and flame retardant canvas fabric is ideal for industrial and power equipment tarps, construction equipment and material tarps. Fabric is shipped in Continuous Yards up to length of the fabric roll, multiple 1-yard individual pieces. This Fire Retardant Canvas Fabric is treated and finished in USA.