Andersen Low-E4 Glass for 400 Series Windows & Doors

That's because the Low-E4 models, which are made to go in Andersen's 400 Series windows and doors, have a .26 to .48 Solar Heat Gain Coefficient (SHGC). That's a measure of how well a window blocks heat from sunlight, expressed as the fraction of solar heat that enters. The lower the SHGC, the less heat comes through. (You can read more about it at the National Fenestration Rating Council's "The Facts About Solar Heat Gain & Windows." Yes, there realyy is a National Fenestration Rating Council. We fenestrate every time we put a window or a door in a building. So get out there and fenestrate today!)

Where were we? Oh, right, windows. The line consists of Low-E4 Glass, Low-E4 Sun Glass and Low-E4 SmartSun Glass, with varying degrees of the properties we've discussed. All three types are have an exterior coating that, when activated by sunlight, is designed to help reduce dirt buildup and water spots and promote faster drying. They're available as tempered glass, which is required as safety glazing in patio doors; patterned glass, in five decorative designs; laminated glass, which is two sheets of glass with an inner layer of transparent plastic to which the glass adheres if shattered, for safety's sake; and tempered laminated glass.

Lowering heat from sunlight can also help reduce energy bills by requiring less lobby air-conditioning, for example. All in all, if you're looking for a smart, efficient way to replace your co-op or condo's common-area windows, well, here's a way of looking at it that your glass is half-full.

Andersen Corporation • 100 Fourth Avenue North, Bayport, Minn. 55003-1096 • (651) 264-5150 • toll-free (800) 426-4261 • E-mail contact for here

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