4550 series Vari-Slide™

The 4550 series Vari-Slide™ door is thermally-broken and custom-designed for telescoping multiple large panels. It is designed with options for pocketing and stacking. System configuration options are endless!

Each system is custom-built using semi-automated fabricating equipment for numerous configurations including 90 & 135 degree units, with options for motorization.

Our newly designed flush pulls and latch assembly are made of aircraft quality precision-milled stainless steel, with a large actuator for finger- touch operation. The maximum security laminated hook-lock is an industry standard; and has been used for years by commercial door manufacturers to meet strict forced-entry requirements.


Tested to AAMA standards. Superior energy performance.


Flush Sill

Our standard flush sill is just 1" tall and is designed to line up evenly with interior flooring, creating a level transition to the outdoors.


Our concealed Slim-Trac™ is available for interior applications, and can be used in exterior applications as well, where air and water infiltration, and wind loading is not a concern. 1" floor tracks are installed to be flush with stone or concrete flooring, and staggered for better concealment while panels are closed. The panels are fully weather-stripped around the base.

Insect Screen

Insect screens are also available in various configurations. Out standard insect screen is a single panel and is placed to the interior of the system, out of the weather and elements.

Precision Bearing Glide Options

The 4550 Vari-Slide™ system glide options feature precision engineered stainless steel tandem rollers in three rail sizes:

  • 2.75" bottom rail with EZ Glide rollers
  • 3.5" bottom rail Super-Glide rollers
  • 4.5" bottom rail with Monumental rollers


Monumental products can be motorized (hardwired or wireless) for operation, and integrated with your home automation system using Doors-in-Motion automation systems.

Vari-Slide™ Flush Sill shown with riser 
Vari-Slide™ system shown with concealed Slim-Trac™ 

Featured Install: Modern Luxury in La Quinta, CA

La Quinta Living This newly constructed custom home boasts more than 12,000 square feet of contemporary living space and spectacular […]

Featured Install: Transitional Architecture in San Diego CA

Trending: Transitional Design Transitional architecture is the hottest trend in interior design, and it’s here to stay. The style is […]

Featured Install: Coachella Private Resort Villa

Coachella OasisThis sprawling desert estate sits on a massive 40 acres, not far from the grounds made famous for holding […]

Looking for a Monumental difference in your project?