72" x 100 Yards Welding Curtain Roll - 12 oz Flame Retardant Canvas Duck - No Grommets - Olive Green Fabric_By_Yard there is no need to

there is no need to put two layers of drop cloths because poly backing canvas drop cloth has two layers already

Then during the Vietnam era it was reestablished for the government ounce duck tents

including Florida

Sigman 15' x 30' Heavy Duty Cotton Canvas Tarp 18 OZ - Green - Made in USA - Brand New

blocks sun

72" x 100 Yards Welding Curtain Roll - 12 oz Flame Retardant Canvas Duck - No Grommets - Olive Green Fabric_By_Yard there is no need toWelding Curtain 12 OZ Flame Retardant Canvas Duck (Olive Green, 72" x 100 Yards Roll)General purpose, non transparent protection against light sparks on a vertical plane. Blocks most UV radiation. Water resistant and Flame Retardant. Fabric Weight: 12 oz. sq. yd before treatment and 18 oz. sq. yd. after treatment. Meet CPAI 84 Flame Retardant Standards. Panels have gromemts every 1 ft on all 4 sides. Fabric rolls do NOT have grommets. Available in