Osmo UV-Protection Oil 410 Clear is a satin, natural oil-based finish for exterior vertical wood surfaces such as doors, windows, cladding, fences and garden furniture. Its microporous surface lets the wood breathe and regulates moisture to reduce swelling and shrinkage, and it will not crack, peel, flake or blister. Applied in two coats it provides a UV protection factor of 12 compared to untreated wood, slowing the natural graying process while enhancing the wood grain and tone. Water- and dirt-resistant and easy to maintain, with no sanding required for recoating. The 410 Clear formula contains no biocides and is safe for people, plants and animals once dry; for surfaces needing added protection against algae, mildew and fungal growth, choose 420 Clear Extra. Coverage approximately 172 sq ft per liter per coat (.75 Liter).