The 4000 Film Series clear and black polyethylene product line has a wide selection of sizes and gauges for general industrial, agricultural and construction applications. Ralston's Series 4000 is made using premium blends of linear rich polyethylene resin. We offer an extensive stock size portfolio as well as custom made poly using different slip components, extra UV stabilizers, special additive packages, and a dozen other features to fit the specific needs of the Canadian film marketplace.