Premium Sliding Doors

Transform your living space with Monumental's cutting-edge sliding door systems. Experience the perfect blend of modern design, energy efficiency, and California craftsmanship.
Premium Sliding Doors

Traditional Sliding Glass Doors

Premium thermally broken aluminum sliding doors with stainless steel hardware and multiple configuration options.

Coastal living room with Monumental 4551 Vari-Slide aluminum sliding glass wall opening to ocean view

Sliding Window Wall Assembly

Premium thermally broken aluminum sliding doors with stainless steel hardware and myriad configuration options.

Desert estate patio with Monumental 5000 Series Sublinear pocketing sliding glass doors fully open at sunset

Sublinear Sliding Door Systems

Revolutionary track-in-floor design with patented reverse rolling technology for uninterrupted views.


Luxury Glass Sliding Doors from Monumental

Your spectacular vistas deserve the finest, most energy-efficient windows and doors from Monumental. Located in Southern California, Monumental is the premier manufacturer and supplier of high-performance aluminum windows and doors across the Western U.S.

Sliding Door FAQs

All three are aluminum sliding door systems built by Monumental Windows & Doors in Palm Desert, California, with thermally broken frames (except tall-panel and corner lead stiles).

The 4501 Series is the traditional multi-panel slider, with a 4-1/2″ frame depth and a stainless steel track insert. The 4551 Vari-Slide is a multi-panel sliding window wall, in pocketing or non-pocketing versions, on a flush sill or Concealed Slim-Track™. The 5000 Series Sublinear sets the track into the floor and has 7/8″ panel interlocks.

Two Monumental systems pocket into the wall: the 4551 Vari-Slide and the 5000 Series Sublinear.

Both the 4551 Vari-Slide and the 5000 Series Sublinear are offered in pocketing and non-pocketing versions. The 5000 Series Sublinear accepts panels up to 7 ft (84″) wide and 175″ (14 ft 7 in) tall (standard panels are 7 × 12 ft; larger sizes are custom, and larger glass is subject to engineering review), and is used in both new construction and remodels. Both systems are available in 90° corner and pocket-corner configurations, and the 4551 Vari-Slide also offers 135° and custom-angle corners.

The tallest Monumental sliding door panel is 175″ (14 ft 7 in), on the 5000 Series Sublinear, which accepts panels up to 7 ft (84″) wide or up to 175″ tall. The 4501 Series and 4551 Vari-Slide accept panels up to 7 ft (84″) wide, with a maximum frame height of 144″ (12 ft) on the 3-1/2″ rail or 72″ on the 2-3/4″ rail.

The 4501 Series and 4551 Vari-Slide share the same roller system and limits: up to 60 sq ft of glass per panel, and quad rollers (AAMA certified to 1,300 lb) support panels up to 1,000 lb. Lighter panels can use the 1.8″ Super-Glide tandem roller (up to 700 lb) or the 1.5″ EZ-Glide (up to 550 lb). The 5000 Series Sublinear accepts up to 72 sq ft of glass and up to 1,000 lb per panel on the Standard Sill (880 lb on the Slim-Track™ sills).

Because every limit applies at once, the largest panels trade width against height. Panels taller than 10 ft may require extended interlocks, and larger glass sizes require engineering review. Complete size limits are on the spec sheets in the Monumental Professionals portal.

Yes. The Monumental 4501 Series, 4551 Vari-Slide and 5000 Series Sublinear all use thermally broken aluminum frames, except tall-panel and corner lead stiles.

All Monumental products are NFRC tested and certified, and those NFRC ratings are used to document compliance with California Title 24 energy standards.

Yes. All three Monumental sliding door systems can be specified with a Barefoot Sill: a flush sill recessed so its top sits level with the finished floor.

The 4501 Series offers an optional flush Barefoot Sill (the same part used on the 4551 Vari-Slide); the 4501 standard sill has a raised interior leg. The 4551 Vari-Slide is offered with a flush sill, Concealed Slim-Track™ or slim sill. The 5000 Series Sublinear installs flush with the surrounding floor on all three of its sill options: Standard Sill (concealed track), Concealed Slim-Track™ and Flush Slim-Track™.

Standard sill pans direct water from the sill to the exterior plane of the building; custom draining sill pans include couplings that can be plumbed to an exterior drain line.

Standard Monumental finishes are Class I clear anodized and Class I bronze anodized, and all exterior coatings are AAMA 2605 compliant. Custom anodized colors, Kynar 500 fluoropolymer painted finishes, dual finishes and simulated wood-grain finishes are also available. Powder coating is not offered.

Standard insulating glass is 6 mm glass, a thermal spacer and 6 mm glass, with high-performance triple-coated low-E. Glass capacity is a 1″ IGU on the 4501 Series and 4551 Vari-Slide. The 5000 Series Sublinear uses a 1-3/8″ standard IGU and accepts glass up to 1-1/2″ thick. Laminated security glass, radius (bent) glass, clear, tinted or privacy glass, argon fill, and acoustic or impact-rated laminated glass are also available.

Monumental manufactures its aluminum windows and doors in Palm Desert, California, and sells through approved dealers serving the Western United States and Hawaii. Contact Monumental for a dealer referral.

CAD details, specification sheets and technical documents for every Monumental series are available to registered architects and dealers through the Professionals portal on monumentalwd.com.

Registration is free. Once approved, professionals can download CAD drawings for the 4501 Series, 4551 Vari-Slide and 5000 Series Sublinear. BIM and Revit files are not currently available.

Production lead time for Monumental sliding doors is typically 6–8 weeks after dimensions are confirmed and drawings are approved. Custom colors add about 6–8 weeks, and custom configurations may extend lead time further.

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