Thank you Bristolite for answering my questions about Coollite. We could not find another plastic unit skylight with Coollite’s performance of 0.26 SHGC and 0.45 U Factor. Even some of the competitors “cobbled up” triple dome over flat glazing of some type don’t meet the International Energy Code Conference (IECC) or the USA National Energy Code. We understand the technology and the performance. The analogy to “Rayban” sunglasses is pretty good. Clever and makes the product benefit very clear. Blocking 99.9% of UV and 85% of infrared light is COOL!