The Plasti-kote Polyurethane Varnish Spray from Plasti-kote. Available in Gloss and Satin finishes, Polyurethane Varnish provides a tough and durable coating to bare wooden surfaces that protects against scratches and stains. The formula is non-yellowing. Coverage: approximately 2.23m² per pack. Drying time: Thoroughly dry in 1 hour. Suitable for bare wood only.