Evolutionary thermal efficiency.
Insulating glass unit with
low-conductance spacer
Argon gas
TMAX™ Low "E" coating
Low-conductance spacer
Revolutionary Performance and Protection.
How you live is more than how you look. It's how you perform. How you act and feel, under every condition life can
throw your way. We can say this with certainty, because we've been around long enough to experience (and help
guide) the evolution of window thermal efficiency. And, we've taken part in revolutionary ideas in performance
and protection along the way. Today, when it comes to thermal efficiency, no other vinyl window manufacturer
can match MI's commitment to producing the highest quality, most thermally efficient windows and doors on the
market.



The latest generation in the evolution of MI's high-performance glazing system options, including
proprietary TMAX™ Low "E" and warm-edge technology