Provides a tough flexible long lasting finish for maximum protection and durability on exterior and marine wood exposureHas excellent flow and self-leveling propertiesContains an ultraviolet absorber to protect against the harmful rays of the sunUse on siding patio furniture railings exterior doors wood boat decks and trim above the waterlineCommonly referred to as liquid plasticPurchase is for 2 gallons Varathane Satin Exterior Wood Deck Siding Oil Based Spar Urethane.