Boyd's Series 3500 aluminum double hung windows are our most exceptional double hung option. Designed to stringent AAMA standards, the Series 3500 are the best double hung windows you'll find for coastal applications. The Series is excellent for hospitals, military buildings, universities, schools, and government offices.
For top-rated performance, the Series 3500 aluminum double hung windows include critical features: a 4" main frame, true divided lights, internal blinds, and side-loaded operating sash for easy maintenance and cleaning. Contact your Direct Assistance rep for help choosing the best double hung windows for your project.