Rust-Oleum 274232 18 oz Frosted Clear $6.85

Amazon has the Rust-Oleum 274232 18 oz Frosted Clear marked down from $19.98 to $6.85 and it ships for free with your Prime Membership or any $25 purchase.

• Use on an array of surfaces to repel moisture and keep them dry including metal, wood, aluminum, galvanized metal, PVC, concrete, masonry, asphalt, vinyl siding, fiberglass and more
• Technically advanced super hydrophobic formula creates a water-proof surface where moisture simply beads up and rolls away
• Covers up to 10 sq ft, dries to the touch in 30 minutes; allow to fully cure for 12 hours before exposing to water for maximum benefit
• Durable formula is a treatment for interior/exterior surfaces to keep surfaces clean and dry, requires periodic reapplication when water stops beading
• Dries to a flat, frosted finish, test in an inconspicuous area before applying to entire surface

Amazon pricing changes frequently, so this deal may expire at any time.