Patio Doors

6400 Series Patio DoorWindow World’s Sliding Patio Doors are inspired by the fundamentals of product excellence and are masterfully crafted for smooth and reliable operation, while also helping to protect your home from inclement weather.

A premium vinyl construction, heavy-duty mainframe and sash, multi-chambered extrusions and steel-reinforced interlocking meeting rails combine for superior strength and structural integrity. Easy-gliding door action is assured with a strong tandem roller system, while the rugged aluminum screen features four adjustable rollers for reliable operation year-after-year.


  • Premium vinyl mainframe and sash extrusions won’t chip, peel, crack or warp and never need to be painted.
  • Dual internal/external weatherstripping on each sash to increase energy efficiency and performance.
  • 1-inch thick insulated glass unit saves energy year round.
  • Protective hollow bulb seal at sill for added weather protection

Additional features

  • Deep interlocks with a protective bulb weatherstrip for a tight seal
  • Multi-point locking system seals the door tightly for added security
  • Heavy-duty aluminum screen has 4 adjustable rollers for smooth functioning.
  • Choose left or right sliding operating panel

All Window World Patio Doors come with a wide range of available options and an impressive Lifetime Limited Warranty* that’s backed by over 50 years of leadership and excellence in the remodeling industry. So go ahead – redesign your home by replacing an existing door or window with a Window World Patio Door. Then just sit back and enjoy the view!

The Window World Premium Sliding Patio Door Collection features three attractive styles: Contemporary, Classic and French:

  • The Contemporary Style is constructed of symmetrical 3″ rails for sleek architectural lines and a maximum viewing area. Its heavy duty construction and high-performance glass system ensure years of durability and energy efficiency.

    Contemporary Patio Door with Colonial Grids

    Contemporary Patio Door with Colonial Grids

  • The traditional beauty of our Classic Style is achieved with 5″ rails for a refined, wood-like appearance, which is a longtime favorite for its timeless beauty and superb construction.

    Classic Patio Door with Prairie Grids

    Classic Patio Door with Prairie Grids

  • Our French-Rail Style provides true authenticity with a 7″ bottom rail, 3″ side rails and a 5″ top rail. Enjoy French door charm in a space saving sliding door design.
French Rail Patio Door with Double Prairie Grids

French Rail Patio Door with Double Prairie Grids

Enhance your new Sliding Patio Door with more options:

  • Available in 2-, 3- and 4-panel configurations.
  • Add one of our Solarzone glass packages for improved energy efficiency compared to a standard glass unit.
  • Designer grids enclosed within the insulated glass unit for easy cleaning.
  • Colonial, diamond and prairie grid patterns available along with V-grooved glass.
  • White, Beige, Rich Maple, Light Oak, Dark Oak, Foxwood and Cherry interior color options.
  • White, Beige, Architectural Bronze, Hudson Khaki, Desert Clay, English Red, Forest Green, American Terra and Castle Gray exterior color options.
  • Optional decorative handles available in Bright Brass, Bright Chrome, Antique Brass and Brushed Chrome.