This is normally in the shape of magnetic secondary glazing, attaching for the metallic frame through magnets. a, U and R values for just one-pane window retrofitted with SiCellA of varying thickness over a one hundred μm-thick supportive substrate hooked up to your glass pane (inset schematic); lines and symbols, https://eyelashextensiontweezers35024.tribunablog.com/what-does-slimline-secondary-glazing-fulham-mean-40547780