OSI, 10 OZ, #521 Gray, Quad Window, Door & Siding Sealant, All Season Formula, Superior Performance On Exterior Window, Door & Siding Applications, Elastomeric Polymers & High Quality Synthetic Resin Formula, Superior Adhesion & Elasticity, Tough, Rubbery Seal, Apply To Wet Or Dry Surfaces, Even At Freezing Temperatures, Resists Dirt & Dust, Yellowing & Water Washout, Self-Tooling, Easy Cutoff Without Stringing, Paintable With Latex Once Cured, Perfect Color Match For Leading Window, Door & Siding Manufacturers.