High-quality aluminum multi-slide and bi-fold door systems that combine exceptional performance with clean design.
Our Series 7000 aluminum door systems address energy and structural requirements while promoting contemporary design.
Vinyl door systems that stand up to the elements and are nearly maintenance-free.
Moving walls of glass that stack or slide into pockets for extra wide openings.
Folding glass doors designed to smoothly stack and fold against side walls.
Packed with innovations that address energy and structural requirements.
Indoor-outdoor spaces in the homes at Sterling Grove are designed for al fresco dining, entertaining, and gaming.
Natural light pours through the Series 3700 Vinyl Multi Slide-Door in a Sterling Grove home.
Set on 780 acres, the community is centered around a tree-lined courtyard with four cornerstone parks, streams and ponds, desert gardens, and fragrant citrus groves. The community features 25 home designs ranging from 1,500 to over 4,000 square feet, and all merge landscape and architecture through the use of massive moving glass walls.
“We bring indoor-outdoor living into every model we create, regardless of the size,” Rhea says, “and with that, the key component is the multi-slide door.”
Model homes at Sterling Grove showcase the Series 600 Multi-Slide Door and the Series 3700 Vinyl Multi-Slide Door. Rhea has his favorite things about each product.
Multi-slide doors create open spaces and blur the boundaries between the inside and outdoors at Sterling Grove.
“For the Series 600 Multi-Slide Door, it’s definitely the low threshold option you can get,” he says. “It is such a great way to introduce indoor-outdoor living with a seamless transition.”
“My favorite thing about the Series 3700 Vinyl Multi-Slide Door is two-fold,” Rhea says. “First of all, it’s competitively priced. And then, it offers high energy efficiency.”
Energy efficiency is important to Toll Brothers, and Western Window Systems’ multi-slide doors helped them achieve their energy efficiency goals through the use of low-E, argon-filled glass and thermally broken aluminum.
“All of our homes here at Sterling Grove are Energy Star rated,” Rhea says. “We integrated Western Window Systems into those plans and have come out with some amazing HERS ratings.”
A 90-degree configuration of Series 600 Multi-Slide Doors eliminates a connecting post, creating a seamless transition from the indoors to the outside.
The energy efficiency and ease of operability of Western Window Systems doors makes it an attractive option for homebuyers who want indoor-outdoor living, and a perfect partnership for builders who want solid service.
“Western Window Systems is really a turnkey solution for us. The quality and the service we get from them is absolutely outstanding. The company stands behind their product,” Rhea says. “The service is great, the installation is easy, and people really enjoy the ability to open the doors up and just really enjoy this wonderful Arizona environment.”
Dealer: XO Windows

Located just a mile from Scottsdale’s Pinnacle Peak, developer K. Hovnanian’s Line K at Pinnacle Peak Place delivers beautiful contemporary homes with majestic views of the city’s most iconic mountain.
Amsterdam-based furniture and interior designer Piet Boon worked with K. Hovnanian on the New Jersey-based homebuilder to create the K Line, which debuted with the Pinnacle Peak Place residences.
The two firms looked to Western Window Systems and the Series 9500 Bi-Fold door to bring together the sophisticated, modern aspects of the Line K home’s interior and the natural wonder of the Sonoran Desert in which it is situated. The Series 9500 Bi-Fold smoothly stacks and folds against the wall to create a huge opening to the home’s backyard patio and pool.

In a North Scottsdale landscape dominated with Tuscan and Mediterranean architecture, the Line K at Pinnacle Peak Place homes stand out with their truly modern aesthetic, attracting younger buyers who seek indoor-outdoor living and contemporary design.

