Silver Line offers the highest quality window at the best possible price. By extruding our own vinyl, injection molding our own hardware, and insulating our own glass units, we are better able to control quality as well as cost, and pass the savings on to you. We pack countless features into every window and door, in an effort to provide you with a product that will outperform and outlast the competition. We give you all of this at a price that's right, and back it with our Limited Lifetime Warranty.