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Extreme Custom Flow provides quality seamless rain-gutters, 5” & 6” K-style, and half-round systems made from Aluminum, Galvanized Steel, or Copper. with our unique, one-of-a-kind themed systems, and our line of ornamental and decorative accessories, we can offer San Diego's home & business owners the ability to fully customize their system from the color, design and material, to adding their own personal touches with our broad line of decorative Rain-Chains and ornamental Gutter Medallions.