This is a 1965 2-page ad for a Koppers Cellon-treated lumber; Dylite Foam; FAST'S Couplings! The size of the ad is approximately 11x17inches. The caption for this ad is 'New Koppers process keeps wood dock free of rot, decay, termites; cuts construction costs 40%' The ad is in great condition. This vintage ad would look great framed and displayed! Add it to your collection today!