Penny Window

Penny Window is a family-owned St. Louis window, door, siding, and gutter company serving the St. Louis metro area since the 1950s, offering replacement and new-construction windows, entry and patio doors, storm windows, siding, and related exterior services with an emphasis on energy-efficient glass options and custom solutions. Penny Window provides free estimates, works with industry-leading brands and warranties, maintains in-house installation crews to ensure consistent craftsmanship, and focuses on delivering durable, energy-saving products and personalized service backed by decades of local experience.