Western Architectural Openings Launches Series 8600 Multi-Slide Door

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Western Architectural Openings Launches Series 8600 Multi-Slide Door

2026-07-16 23:32 Last Updated At：23:40

PHOENIX--(BUSINESS WIRE)--Jul 16, 2026--

Western Architectural Openings, part of the MITER Brands portfolio and the premier national provider of large-format glass walls, doors, and window systems, recently announced the launch of its new Series 8600 Multi-Slide Door, concurrent with its recent rebrand event. The latest addition to the brand’s Vantage Collection, the Series 8600 combines industry-leading U-factors, exceptionally narrow sightlines, and expansive panel sizes to create a moving glass wall that delivers high performance within a modern aesthetic. Designed to meet evolving energy and performance demands while preserving scale and design intent, the Series 8600 supports a wide range of architectural applications.

This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260716538970/en/

“We are excited to deliver a refined, minimalist design combined with outstanding performance with the Series 8600,” said Kevin Vilhauer, Vice President of Product Engineering at MITER Brands. “The refined sightlines, innovative glazing channel, and seamless water management system provide architects and designers the freedom to realize their vision without compromise. Homeowners will enjoy expansive openings and stunning views paired with the quality and craftsmanship they’ve come to expect from Western.”

The Series 8600 accommodates panels up to 12 feet tall or 60 square feet, while its clean lines, narrow profiles, and 2 1/8-inch interlock stiles maximize visible glass area, creating a refined, minimalist aesthetic. A range of frame options, including 1-inch and 1 3/8-inch stucco returns and no-fin configurations, provides flexibility across many installation conditions.

The Series 8600 launches with an innovative concealed multipoint locking system that provides enhanced security without disrupting sightlines, in line with the product’s seamless architectural aesthetic.

Ideal for a variety of climates, the Series 8600 delivers outstanding thermal performance with U-factors starting at .30, or as low as .28 with low-E i89 glass. Multiple dual-pane Low-E argon-filled glass options allow architects and builders to meet energy requirements. The system is performance-rated to PG25, offering durability and long-term reliability.

The Series 8600 is available in a wide selection of popular finishes to match nearly any home aesthetic, including in-stock anodized and ten designer colors. Each painted finish is meticulously applied to meet or exceed AAMA 2605 standards, the highest rating for organic finishes. Custom color matching is also available.

To learn more about Western Architectural Openings and the Series 8600 Multi-Slide Door, visit WesternAO.com.

About Western Architectural Openings

Founded in 1959, Western Architectural Openings, part of the MITER Brands portfolio, is the premier national provider of large-format glass walls, architectural doors, and luxury window systems. Renowned for redefining the boundaries between indoors and out, Western crafts custom-configured aluminum systems of exceptional scale and sophistication. Each product is meticulously engineered, precision-built to order, and delivered with a level of personalized service reserved for the most discerning projects.

Driven by an uncompromising pursuit of craftsmanship and innovation, Western Architectural Openings partners with architects, builders, and homeowners to create breathtaking environments that elevate everyday living. From panoramic vistas to seamless indoor-outdoor transitions, Western transforms spaces into immersive experiences that celebrate light, openness, and the beauty of their surroundings.

For more information, visit WesternAO.com.

About MITER Brands

Founded in 1947, MITER Brands is a residential window and door manufacturer that produces a portfolio of window and door brands for the new construction and replacement segments with an owner-operated, family-first approach. Through optimized manufacturing, valued relationships, and dedicated team members coast to coast, MITER Brands instills confidence and drives quality customer experiences. The name “MITER” is an acronym reflecting five of the company’s core strengths: Manufacturing, Innovation, Trust, Experiences, and Relationships.

For more information, visit MITERBrands.com.

UK intelligence watchdog raps MI5 for lying to courts about a neo-Nazi informer

LONDON (AP) — The British government said Thursday it will keep the country’s spies on a tighter rein after a report found MI5 misled courts about its ties to a neo-Nazi informer accused of attacking his partner.

Home Secretary Shabana Mahmood said she is taking “urgent action” to strengthen oversight of the U.K.’s domestic security service after a tribunal found MI5 repeatedly gave “a false account” of what had happened.

Earlier this year MI5 apologized and paid compensation to settle a legal claim brought by a woman over her treatment by an allegedly abusive ex-partner. He was an MI5 informant, identified in court as Agent X.

MI5 maintained in sworn testimony that it had neither confirmed nor denied that Agent X was an informant. But in fact an MI5 officer had disclosed the information during a conversation with a BBC journalist who was investigating Agent X.

The Investigatory Powers Tribunal, which investigates allegations against Britain’s intelligence services, said MI5 had misled three courts because a false narrative was “allowed to take hold and persist.” It said “systemic failures” meant chances to correct the error were missed,

“The findings of this report are stark. It details serious failings by individual MI5 officers, resulting in false evidence being provided to the courts, and criticism of MI5 as an organization,” Mahmood said.

“MI5 plays a critical role in keeping our country safe and we owe a debt of thanks to its staff. They have made significant progress over the last year in learning from these failures, but there is more to do to ensure the highest standards of integrity and accountability are upheld.”

MI5 Director-General Ken McCallum said the agency “recognizes without hesitation the seriousness of our failings” and was working “to ensure we never find ourselves in this position again.”

In a separate case last year, a report found that MI5 protected a top spy planted within the Irish Republican Army when they knew he was wanted by police for murder, and continued to suppress the truth about the agent decades after Northern Ireland ’s bloody conflict.