Exterior, Inc, is a vinyl window manufacturer based in Chicago,
We have been a window manufacturer since 1953. We currently
manufacture over 30 types of windows and other vinyl products.
Our sister company, Top Coat Inc. is the leader of profile
laminating in the window industry.
Lang Exterior you know you're getting fast professional and
With 58 years of experience, we have the ability to give exactly
what you need. Our entire product line will ensure that you
and your customer have the best vinyl window experience possible.
Over the years we have constantly
upgraded our product to stay on top of the industry.
Our design and manufacturing are unsurpassed in design as well