This traditional design will allow you to maintain the original look of your home. Double Hung opens by sliding the bottom half of the window up or sliding the top half down. Because only half of the window area can be open at one time, they provide less ventilation than casement style windows. But advantage of Double Hung windows is they can be used to create air movement in the home by opening the top portion of the windows on one side of the house and opening the lower portion of the windows on the coolest side of the house. Air will naturally rise out of the higher opening, pulling cooler air in the lower opening. The spiral sash balance system holds each sash securely in any position and lets you clean your window without having to go outside. If ease of cleaning and maintenance is a concern, our vinyl Double Hung windows allows the sash to tilt back into the structure and lock in place for easy cleaning. A full size screen allows ventilation from the top and bottom.Our goal is to improve the appearance, efficiency, comfort, and ultimate value, of any home that has our products installed with services in the Greater Toronto area includes Toronto, Mississauga, Brampton, Oakville, Ajax, Pickering, Markham, Unionville, Thornhill, Woodbridge, Richmond Hill and Aurora.