Phifer offers a complete selection of fiberglass insect screening. BetterVue and UltraVue are Phifers new iVis (improved visibility insect screening) products that allow you to see the view, not the screen. Phiferglass, Phifers trademarked fiberglass screening, has been the standard in the industry for decades. They are produced under the most exacting conditions to meet rigid specifications and have all passed 1200 hours of QUV accelerated weathering.