Yep I missed this in the rant below... why the NFRC actually matters? Because between states and future code changes, providing a full system calc with a "certification" will become the norm. California is already on this and surely not the first. Because of the need to reduce the energy consumption, there will be more of a push on this angle and as of this writing NFRC will be the only game in town... like it or not.
Also NFRC will be adding IG Certification to their wares... yep, why trust the current system that works so well when there's money to be made!
What's crazy is there are plenty of industries that WANT NFRC- like Dynamic glazing, Window Films, Garage Doors etc... all of the consumer style products... yet they waste time on us. ((And why do consumer style products want them? Because they have a track record of protecting people who NEED protecting. They should just stick with what they are good at))