Minwax Helmsman Spar urethane is specially formulated as a protective clear finish for exterior or interior wood exposed to sunlight, water or temperature changes. Satin spar urethane1 gallon sizeContains UV blockers to reduce the sun's graying and fading effectsForms a protective barrier against rain and moistureSpecial oils allow the finish to expand and contract with the wood as seasons and temperatures changeIdeal for use on doors, windows, trim, bathroom cabinets, bar tops, kitchen countertops and outdoor furniture