Any coating produced at North American Coating Laboratories is completely guaranteed for the life of the lens up to two years. This includes scratches, which may have developed in the vacuum coating itself.
When returning the original coated pair of lenses for a warranty redo, include the original control number (envelope), month, and year that the job was originally coated. Having this information will ensure a warranty redo at no charge.
If you have any questions, please call our Customer Service Department at (866) 216-6225 (NACL) Monday through Friday 8am to 4:30pm Eastern Standard Time.