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Local, Family Owned
We care about the residents of the Lehigh Valley because this is our home too. We’re raising families here…we love doing business here, and we’re proud to say that we’ve been helping our neighbors make improvements to their homes for over 50 years.
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Great Products, Incredible Service
We stand behind the wonderful products of our window, door and siding manufacturers…and we take great pride in our work, as if every home were our own.
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  • We invite you to visit our showroom, and see our vast array of products in action.
    Have confidence in your newly installed products, for years to come.
    Check out our latest newsletter for helpful info and product updates.

StorefrontServing the Valley for over 60 years

Penn Windows, Doors & Siding has been servicing the Lehigh Valley since 1948. Penn is a local family owned and operated business focused on supplying Allentown, Easton, Bethlehem, and the surrounding areas with top quality products and great customer service. We specialize in custom vinyl windows, custom steel and fiberglass doors, storm doors, sliding patio doors, and vinyl siding. We install everything we sell, giving our customers a 10 Year Workmanship and Service Warranty in addition to all manufacturers’ lifetime warranties. Call us for a free in-home consultation 6 days a week or visit our showroom at 1518 Union Boulevard in Allentown, PA 18109.

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  • About Us

    For over 60 years, our business has been run with three simple objectives — providing customers with quality products, an enjoyable sales experience and complete satisfaction. That’s why our customers return year-after-year for their home improvement projects.

    Penn Windows, Doors & Siding
    1518 Union Blvd, Allentown, PA 18109
    (610) 433-4196

  • Latest News

    Screen Shot 2015-05-21 at 9.21.58 AM

    New Website Launch

    May 21, 2015
    We're very excited to introduce our new website to our valued customer
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