Northwest Rain Gutter Wide-Bottom Roof Gutters are much larger. The Wide Bottom Gutters have a greater capacity for leaves, needles, and water. Wide Bottom Gutters also look very nice on large rooflines and metal roofs. Available with a smooth face or 3/4″ tensioner (depression Pictured). Available in all metals (Aluminum, Steel, Copper, Zincalume Plus and Galvanized Steel). Wide bottom Fascia Gutter A Long standing Northwest preference with our High Rain volume requirements, Its High Capacity offers a solution to the most stringent weather conditions combined with a clean line and attractive addition to any Northwest home.