With AMSCO Windows® you can be confident that you are getting the highest levels of quality engineering and construction with AMSCO® sliding patio doors. Unlike lesser-quality windows and doors on the market, AMSCO manufactures every vinyl sliding patio door using certified extrusion material that has been tested for heat resistance, weatherability, dimensional stability, weight tolerance and tensile strength among others. This means you always get a patio door that’s high quality and low maintenance.

All AMSCO patio doors meet or exceed the performance and certifications of the following organizations:

• AAMA certified for structural integrity and reliable performance

• NFRC certified thermal performance

• ENERGY STAR qualified with Low-E glass

Backed by our lifetime warranty
Simply put, we back our windows and patio doors with a warranty that gives you peace of mind. Our Lifetime Warranty covers any defects in materials or workmanship in our vinyl windows and patio doors for as long as you own your home. View our warranty policy here for complete warranty details.

If you're looking for the best in performance and appearance, check out our vinyl patio doors in the Artisan Series for new construction and remodeling or in our Studio Series for the cost conscious new construction builder.