Review on Warp Brothers 4CH350-B 4CH350B Poly Film: 4 mil, 3ft x 50ft, Black - Top-Quality Protective Covering by Alan Brewer

This 4 mil thick black foil is far better than anything available at my local hardware stores (two big popular chains). Local stores offered sheet metal as thin as 2 mils, which are their very heavy materials. Their film was also transparent and only available in sheets large in both directions. I like the fact that this film is available in 36 inch width and on roll. I was able to easily roll out the amount needed and cut to length. The material is completely opaque. The 4 mil thickness proved perfect and it was very strong. For those wondering. "Mil" means 1/1000 of an inch, so this material is 4/1000 of an inch thick.