-Sustainability - Brightening - Movement "It’s no secret that architects and designers prefer an all-glass entrance system to a bulky, full-framed counterpart. The reasons are clear: more glass and less visible hardware means unobstructed views, better daylighting, and a high-end, minimalist aesthetic. Unfortunately, increasingly stringent energy and air infiltration codes—such as California Title 24—pose a challenge when specifying exterior entrance systems with all-glass visuals." Reference: ArchDaily 11 June 2018 https://www.archdaily.com/895943/glass-entrances-in-the-changing-landscape-of-energy-codes-by-crl-aluminum