Andersen Windows. Developed to be the maker’s most energy-efficient product line, A-Series windows and doors also offer a wide range of styles and design options. A-Series products are designed to work together, with consistent profiles and accent windows, allowing designers the ease of choosing different window styles for the same home without sacrificing the overall architectural style. They are available in three interior wood species, nine prefinished interiors, and 11 standard exterior colors. The complementary trim system comes in six profiles in all 11 exterior colors. 800.426.4261. www.andersenwindows.com.