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Therma-Tru Patio Doors

Learn How To Select Your Doors

A Variety of Styles With A Lifetime Warranty

Both Double Door French Opening and Patio Doors are available in Classic-Craft®, Fiber-Classic®, and Smooth-Star®, and backed by a limited lifetime warranty. Plus, all units are Energy-Star qualified, helping to reduce utility bills and energy demand.

Double Door French Opening

Doors open in the middle, unlocking the astragal allows for both doors to operate freely. Aluminum astragals and their dual-durometer triple seal boot design that secures the door tightly to the sill, providing a weather-tight seal between the door and the sill.

Sliding Patio Door

One door is active, the other fixed. The active panel can either be hinged from side jamb or center mull post. Therma-Tru vinyl sliding patio doors are crafted to ensure smooth operation with fully adjustable rollers. Reinforced windows help provide weather protection and security. A tamper-resistant, adjustable locking system also delivers added security.


Features and Benefits

  • Offers a broad range of price options that are also cost-effective
  • Extensive selection of glass options and panel styles for many different architectural preferences and styles
  • Custom sizing available
  • See website for a variety of warranties based on purchase

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About Us

Why Builders Recommend Allegheny Millwork & Lumber

Our reputation for quality and excellence is why you should choose Allegheny Millwork & Lumber.  Our staff is highly knowledgeable and friendly.  We will help guide you through the myriad products when you are building or renovating your home.

From building materials to fine finishes, we have you covered.  Beautiful doors create a welcoming entrance to your home.  Crystalline windows and gargantuan patio doors can grace your property, framing the view and keeping you protected from the elements.  Our experts can help you make the decisions when choosing what is right for you.  No project is too big or too small.  Come see why the best contractors in Pittsburgh have been using Allegheny Millwork & Lumber for the last 40 years.

With over 350 moulding profiles in stock, we can adorn your windows and doors, ceilings, walls, and floors with quality woodwork to put your own stamp on the project at hand.  We can also match existing millwork to complete your historical renovation.

Additionally, we will help you design the kitchen of your dreams.  We encourage you to make an appointment in our 10,000 square feet design showroom.  You can also visit our virtual showroom by clicking on the link to the right  We hope to see you soon!