Internal Frame Coating destroys rust hiding inside the chassis, so it doesn’t rust its way through. Tough phenolic resin penetrates, converts and encapsulates the rust on the internal surface Zinc phosphate seals it to prevent future corrosion 24"-long tube with conical nozzle reaches in to spray coating in a radial pattern for complete coverage Aerosol covers 10 sq. ft., qt. covers 50 sq. ft. Fully cures in 24 hours You spend time and money restoring a chassis...but what about all that rust inside the frame? Use our Internal Frame Coating to make your chassis rust-free throughout!