Author: DW (---.proxy.aol.com)
Back with you again Jeff, here is what I have found at:
I definitely want the Solaris. The R value is commensurate with the Andersen. The U value for the casement with low E is .29 and the R-value is 1/.29 = 3.448
I like the Solaris because of the multiple color choices. Also if you get into the site you can review the construction. There are multiple thermo breaks within the frame work which in my opinion add not only to R-value but also to strength. All of the test results, construction, and installation is on the above web site. Good Luck, DW
Oh I almost forgot, my contractor price is $2.62 per united inch or $223.19 for an emergency egress bedroom casement window approximatly 3' X 4' with a minimum opening of 5.7 square feet to meet Michigan Building Code. Hope this helps.