PlastiKote PKT591 Varnish Spray Clear Gloss 400ml 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. Suitable for bare wood only. Coverage: Approx. 2.23m² per pack. Drying time: Thoroughly dry in 1 hour. PKT591 varnish has the following specification: Finish: Gloss. Colour: Clear. Pack Size: 400ml.