General Finishes Clear Exterior 450 Flat Varnish, Gallon is specially designed for exterior wood applications, providing durable protection that withstands the harsh effects of sun, rain, and wind. This varnish can also be used as a tint base to create custom colors, making it versatile for various projects. I for vertical surfaces such as fences, patio furniture, garage doors, entrance doors, and interior windows, it is not for use as a deck finish. Fortified with UV absorbers, Exterior 450 stabilizes the finish while its built-in mildewcide helps retard mold and mildew growth. It performs excellently as a clear coat or as an optional topcoat over General Finishes Milk Paint. Model Number: