The top and bottom sashes of a double-hung window both glide up and down. In hotter climates, both sashes can be opened at the same time to let more air into the room and improve circulation. Double-hung basement fire escape window must meet the minimum requirements to be classified as egress windows. Double-hung windows with heights ranging from 24 to 60 inches and widths ranging from 28 to 60 inches are common. The cost of these windows ranges from $250 to $500 per window.