Milgard. Quiet Line vinyl windows can be specified with a 40 to 47 Sound Transmission Class (STC) rating. Once a frame type has been selected, the firm can build a window to meet a specific STC requirement by combining heavier glass, laminated glass, or differing glass thickness. The windows, available in white or almond, come in slider, double-hung, casement, and picture styles. 800-645-4273. www.milgard.com .
Windsor. Featuring pre-punched nail fins, multi-chambered extrusions, galvanized steel reinforcement bars, and multi-point locking systems, Next Dimension vinyl windows are strong and easy to maintain, says the firm. The windows, which come in a variety of shapes and sizes, are available with obscure, tinted, and low-E glass options. 800-887-0111. www.windsorwindows.com .

Photo Credit: Weather Shield
Weather Shield. Vision 2000 vinyl windows are maintenance-free and won't rust or corrode, the firm says. The windows are available in single-hung, double-hung, casement, and awning styles. The line comes standard with integral nailing fins and fusion-welded corners. Optional grilles and glazes also are available. 800-477-6808. www.weathershield.com .
Andersen. The 200 series gliding vinyl-clad window comes in 3-1/4-inch and 4-9/16-inch frame widths with seamless frame vinyl cladding. The window, which is available with a natural pine or pre-finished white interior.
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