Raytec Manufacturing has been serving the seamless gutter industry since 1956. Manufacturers of Hangfast and Hangtite hidden hangers widely regarded in the industry as the best hidden gutter hangers available. Also MFG of REAL gutter cover and the home of 200 hr yellow color zinc screws, 1,000 hr REZIST screws and 410 Stainless Steel screws; Call for Free samples.