Education and Visual Aids Thermal-WALL PH Panel Certification Report A Passive House Institute report validating the high-performance insulation properties of the Thermal-WALL PH system. View Technical Report Education and Visual Aids Passive LEED Net-Zero Project with Legalett A case study which showcases a real-world application of Legalett’s high-performance envelope systems in a Passive House/LEED Net-Zero residential project. View Case study