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- PHI window certification: previous success and new climate zones
- ermal qualities could only be achieved by individually improving standard windows, at times right on th... with the window frame surface area A<sub>f</sub>. All of these parameters are important because, on one... describes losses from the opaque component. The smaller Ψ<sub>opaque</sub> is (that is, the lower losse... planning:thermal_protection:windows|Overview]] of all articles on Passipedia about windows [[planning: