Andersen Windows has expanded its 100 Series product line to include a Flush Fin replacement frame option. The Flush Fin frame option is designed to simplify the installation process for contractors in Southwest market areas; it is available in Arizona, California, Nevada and Utah. The product features an integrated fin that allows for easy installation of a unit over an existing aluminum window frame in stucco applications without disturbing the stucco exterior. (Andersen 100 Series Flush Fin windows are limited to openings with an aluminum frame with a 3/8-inch-wide exterior surface. Flush Fin units are not permitted for tear-out replacements or in openings more than 3 stories above-grade in height.) With the exterior fin covering the old frame and stucco, the window provides a clean exterior finish. Andersen’s 100 Series product line is engineered with Fibrex composite material for durability and energy efficiency.