Gutter Suppliers Inc., Lambertville, Mich., offers premium metal products. Aluminum and copper gutter components are available in K-style and half round. A large selection of coil stock is available for 5-, 6- and 7-inch K-style roll-forming gutter equipment. All aluminum products are manufactured with a baked-on polyceram finish that comes with a 20-year limited warranty, including roof edgings, valley-roll flashings, step flashings, soffit systems, fascia covers, J-channels and F-channels.