Awning Windows

Replacing your existing windows is more than an upgrade — it’s your chance to let your personal style shine. Have double hung windows? Feel free to change like this homeowner did. They installed an awning window above the kitchen sink.

Design with Style.

See the variety of beautiful styles EcoSmart Replacement Windows offer: Double Hung Windows - Sliding Windows - Casement & Awning Windows - Picture & Shaped Windows - Sliding Patio Doors - Bay & Bow Windows – Garden Windows. Give your living room a fresh look with a bay or bow window. Whatever you choose, we have a wide range of styles fit for your personality.

Midwest Co

nstruction has been installing Great Lakes EcoSmart Replacement windows for homeowners since 1985 and here is why!

Great Lakes Windows, crossed oceans and spent decades developing the highest-quality replacement windows homeowners can find. Our attention to quality started in 1981 when the founders of the Great Lakes Window brand discovered a popular window technique used in Europe. They quickly brought it to their home in Toledo, Ohio. We continue to develop many more innovative product lines, including EcoSmart windows.

Almost ten million vinyl replacement windows and doors later, our standards are as high as ever. We continue to introduce new products, add new options and provide more support to homeowners, coast to coast. In fact, we believe our products are only as good as the people who sell, design and make them, so we work with the best home improvement professionals to bring EcoSmart to your home. That’s why Great Lakes Window products stand out among the competition.

Our premium products are made using state-of-the-art technology, modern equipment and cutting edge operational techniques. The strength of our parent company, Ply Gem, with over 70 years in the building products industry, provides  the opportunity for the Great Lakes Window brand to bring more innovative solutions in design, performance and function that go above and beyond your expectations in replacement windows and patio doors.

When your home is ready for an updated look with energy efficient products then give Midwest Construction a Call Today! 1-800-925-6665 or Schedule a Free Exact Cost at

You can stop into one of our showrooms and operate full size window displays, check out all of the different siding profiles and colors, or step into our Oasis All season Sunroom attached to our showroom to give you that real life sunroom experience.

2021-SE 44th Court-Grimes, Iowa 50111 -                     1601-South Taft Avenue-Mason City, Iowa 50401

Your project will be done in a timely professional manner by our well trained crews. Your job site will be cleaned up daily and all tools secured. Each and every one of our crews is insured for your peace of mind and comfort.

Quality Products & Quality Installation Since 1958