With over 35 years of experience in window manufacturing, Toronto's Alton Windows and Doors is recognized by homeowners, renovators, architects and builders alike as one of this country's leading manufacturers of highly crafted windows and doors. Alton's reputation is based on its commitment to innovative design, unsurpassed craftsmanship and excellent customer service. Choose wisely. Choose Alton Windows and Doors. We are a Toronto window and door company. We design, manufacture, customize and install. Our wide selection, quality and service are unique. We provide full satisfaction guarantee. Alton is a trusted name for windows and door. Canadian-made with pride since 1972. Ask for our free home expert service. We service Toronto, Etobicoke, Scraborough, North York, Burlington, Markham, Richmond Hill, Brampton, Mississauga, Pickering, Oshawa, Newmarket, Aurora and the surrounding GTA.