Hi PAlan
The brand name for this window film is Energy Film. Energy Film is made of a spectrally selective material that blocks 70% of thermal solar energy in summer and reduces heat loss through windows in winter. It blocks 97% of UV light while still allowing 77% of natural light into the room. Energy film also has excellent visual clarity. To see detailed instructions on how to apply please visit
http://energy-film.com/images//engl... and to see the performance data for the film please visit
http://www.energy-film.com/images/e.... I hope this helps.
answered 3 years, 6 months ago