We do the research, So you don't have to

If you don't buy a strong replacement window, then you might as well just keep your old ones.  To ensure the strength of our patented Fibrex material window, we've kept the same window frame submerged in a Florida swamp since 1988.  To this day, our testing engineers inspect it every year, an there has been absolutely no change.  our other weather-testing sites in sub-zero Minnesota and the Arizona desert have yielded the same result: after 22 years in the worst conditions, the very same Fibrex material has remained unchanged. 

Why do we perform this crazy weather-testing? To build the best replacement window, that's why.