ZAR Satin Poly High Performance Exterior Water Base Polyurethane, Environmentally Safe, Clear Wood Finish Specially Formulated To Protect & Beautify Exterior Wood Surfaces Exposed To Direct Sunlight, Containing Ultraviolet Radiation Absorbers & Anti-Oxidants, Full Bodied Formula Brushes On Like Conventional Polyurethane For Maximum Durability & Beauty, Ideal For Wooden Marine Surfaces Above Water Line, Exterior Doors Including Fiberglass, Wood & Steel Doors, Natural Wood Siding, Patio Furniture, Fences, Gables & Other Wood Surfaces.