Alpen Fiberglass Windows from Alpen Energy Group

Alpen Energy Group sets the bar for window energy performance using a combination of suspended films, low-e coatings, low-iron glass, gas fill, fiberglass frames insulated with vacuum-silica aerogel, and low-conductivity spacers. Its highest-performing windows achieve R-20 center-of-glass insulating value (unit R-value of 10, U-factor 0.10). The majority of the company’s products are used in projects in which different glazings are used for different...