Allied Window's screens are of exceptionally high quality and strength of construction. All frames are of extruded aluminum, with heavy solid extruded corner keys. Very large screens can be provided, without the need for a brace bar. A complete variety of screen wire materials is available, including charcoal aluminum (which is the standard wire), black aluminum, bright aluminum, bronze, stainless steel, and charcoal fiberglass wire. Fiberglass and aluminum "sunshade" materials are also an option. Springs, handles, spring-bolts, tracks, and other hardware are available to adapt to field conditions. Screen wire is held in place by a large diameter re-usable tubular vinyl spline. Spline color choices are white, black, beige, light gray and medium gray. Custom shapes and custom colors are popular screen options.