Milgard Ultra™ Series (Fiberglass)
Choose the Milgard Ultra™ Series when you want windows that combine the timeless beauty of wood with the unbeatable strength of fiberglass. Built with Milgard’s proprietary pultruded fiberglass, Ultra windows don’t swell, rot, warp, or corrode — even in coastal climates, humid conditions, or homes exposed to extreme heat and cold. When other materials break down, Ultra stays strong.
You’ll enjoy a window that looks as good as it performs. The deep, rich exterior color finishes give your home a bold, high-end look vinyl can’t match, and they’re engineered to stay vibrant for decades without peeling or fading. Inside, you can tailor the look with classic white, sleek black, or warm wood veneer options that elevate your interior style.
Ultra isn’t just about appearance — it’s about performance. With exceptional thermal efficiency, these windows help lower your energy costs while keeping every room comfortable year-round. And with styles ranging from casements and awnings to sliding, double-hung, and expansive picture windows, you can design every room to fit your vision.
Backed by Milgard’s Full Lifetime Warranty, the Ultra Series delivers strength, style, and peace of mind. When you choose Ultra, you’re not just replacing windows — you’re making a confident investment in lasting durability and timeless curb appeal architectural appeal.