 Because your windows from Universal perform better and last longer. They have spacer technology that keeps the edge of the glass warmer, holds the window seal longer, making your windows last up to five times longer than other window systems. Plus, Universal backs it up with a lifetime warranty as long as you own your home and 20 years to the next homeowner. So call Universal Windows Direct at 443-353-9462. That's 443-353-9462.