Clera Windows + Doors is a reputable vinyl window manufacturer in Ontario with a history of dependable and high-quality products. Our team manages every stage of your replacement project, from start to finish, ensuring every stage of your window or door project meets our lofty standards of craftsmanship. With over 45 years of experience, we have earned a reputation as one of Canada's leading window and door manufacturers and installers. Our team of factory trained technicians can trust our A+ BBB rating is no accident!