How can I know if my windows have Low E glass?
I am replacing a sliding patio door with a French door and have the choice between Low E and not Low E glass. I was going for Low E and then the door reseller said that if my other windows are not Low E I may want to get the same not Low E glass because the Low E will have a tint and it may look weird (the French door will be 4 inches away--a pillar--from a big floor to ceiling window).
There is some engraving on the glass of my window:
tempered safety glass
21 16 CFR 1201-II
2 07 1-1984
I don't see a tint but I also don't know how much it would be.
How can I find out, or at least make a decent decision re: Low E versus not. (Non Low E will also save me ~$170 at order time).