The trusted window, door, siding & gutter store for St. Louis & St. Charles county.

Find expert tips on buying windows and doors in this informative eBook:

We Proudly Carry The Best In Windows, Doors, Siding and Gutters.

Combining unmatched performance with distinctive style for a perfect fit.

Who is Penny Window?

For over 60 years, we have been serving greater St. Louis and St. Charles County with the best in windows, doors, and siding.

By offering top of the line products at a discount price, Penny Window gives homeowners a simple – and affordable – way to add fresh, new features to their home.


What Our Customers Say

About us, our products, pricing and workmanship.

They went above and beyond to get the information to us, and when we ordered it, it came in within 2 weeks. Their knowledge made it happen for us. Joe of St Louis, MO.

Penny Window just finished installing my new windows, they are beautiful and better looking than all the neighbors windows. Mr, Pappert, O’Fallon, MO.