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Penofin Blue Label Sierra is a premium penetrating oil finish engineered for exterior wood surfaces. This professional-grade formula delivers deep color enhancement while providing superior UV and moisture protection. The 1-gallon size covers approximately 400-600 square feet per coat, depending on wood porosity and application method. Sierra's rich tone accentuates natural wood grain and character, making it ideal for decks, siding, and architectural millwork. Easy to apply with brush or cloth, it requires minimal maintenance and resists weathering, fading, and water damage. Trusted by contractors and homeowners for lasting durability and authentic wood beauty.