The best replacement window material type for your home Pella® of Denver, Colorado is devoted to giving you the best replacement window options for your home. With several unique window series and three window material types, you’re sure to find the perfect replacement windows to fit your space. Whether you’re searching for wood windows, vinyl windows or fiberglass windows, we have various options to meet your needs and your budget. If you’re wondering what window material is best for your space, schedule an in-home consultation with a member of our experienced staff. Or, visit one of our local showrooms to view one of the most comprehensive selection of sizes and styles that we offer in the Denver area. Our wide variety of replacement windows enables our showroom staff to work with you to meet the needs of your room while staying within your budget. Looking to get a preview of our selection of replacement windows before you come by one of our showrooms? You can also find our variety of windows on our windows styles page.