Fusion-welded Cellular Vinyl Window

SuperCell 2000 is the only fusion-welded cellular vinyl window on the market, the company claims. Cellular material, it says, has an insulation capacity that is 200 percent higher than hollow vinyl and 60 percent higher than wood. It comes standard in pre-finished white and has an integral J-channel, low-E glass, and a brick mold exterior frame. Various styles are available. Cost: About $160. SuperSeal Window and Door Co. 888-639-8469. www.supersealwindows.com.