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ReL Safely blacking out double-paned windows?: Solution employed in a 1916 designated historic brick building was to build a box around inside of windows, paint the surface showing through the window glazed with unbreakable LexanSee the resulting 'look' of windows appearing open to the interior at https://www.google.com/search?q=The+Sam+Waller&rlz=1C1GCEA_enCA1185CA1185&oq=The+Sam+Waller&gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIICAEQABgWGB4yDQgCEAAYhgMYgAQYigUyDQgDEAAYhgMYgAQYigUyDQgEEAAYhgMYgAQYigUyCggFEAAYgAQYogQyBwgGEAAY7wUyCggHEAAYogQYiQXSAQk5NjE0ajBqMTWoAgiwAgHxBcT_-M66Jc5u8QXE__jOuiXObg&sourceid=chrome&source=chrome.rb&ie=UTF-8#lpg=cid:CgIgAQ%3D%3D,ik:CAoSF0NJSE0wb2dLRUlDQWdJQzZnNC1uLVFF