Draft-Stoppers. Instead of replacing a leaky window or door, consider using Window and Door Weatherseals from Conservation Technology to fill in the gaps. The company stocks a wide assortment of shapes, sizes, and colors, most of which are installed in a 3mm groove that you cut with a router bit. Options include tubes, flippers, and sweeps made of silicone rubber; plastic leaf seals; nylon brushes; and urethane-foam compression seals. Prices range from 36 cents per foot to $3.60 per foot. Conservation Technology, 800/477-7724, www.conservationtechnology.com