Alpen High Performance Windows First to Receive PHIUS Certification
April 12, 2013—Boulder based Alpen High Performance Products (Alpen HPP) is pleased to announce that they are the first manufacturer to have completed certification of their high performance fiberglass windows under the Passive House Institute-US (PHIUS) Certified Product Performance Data Program. PHIUS developed the certification program to assist domestic (North American) and international window manufacturers
April 15, 2013