BUY THE BEST FIBERGLASS WINDOW ON THE MARKET. OR BUY THE BEST FIBERGLASS AND MAKE IT YOURSELF. The FiberFrame ™ proprietary pultrusion method provides the best lineal ﬁ berglass available. It works for us. It can work for you. 2x stronger than aluminum. Near-zero thermal expansion. It won’t warp, rot, dent or rust. And that’s just the beginning. We can create ﬁ berglass lineal from thin-wall multi-cavity to large structural-type shapes. So whether you need the turnkey FiberFrame Fiberglass Commercial Window System or lineal FiberFrame proprietary ﬁ berglass in virtually any proﬁ le, FiberFrame delivers. For a free FiberFrame ﬁ berglass sample kit go to FiberFrameDelivers.com or call Commercial Sales at 800-522-4999 ext 130.