Simonton^® 5050, ComfortSmart^™ and Contractor Double Hung Windows, along with Inovo^® and Contemporary Sliding Patio Doors, are now backed by one of America’s most trusted consumer emblems and include an additional two-year limited warranty from Good Housekeeping

Cornerstone Building Brands, a leading manufacturer of exterior building products in North America, today announced that five products from its Simonton Windows & Doors brand have earned the Good Housekeeping Seal following rigorous, independent evaluation by the Good Housekeeping Institute. Newly recognized products include the Simonton 5050 Double Hung, ComfortSmart Double Hung, Contractor Double Hung, Inovo Sliding Patio Door and Contemporary Sliding Patio Door. This latest recognition builds on the four Simonton products already backed by the Good Housekeeping Seal, further reinforcing confidence in the brand’s quality, performance and everyday reliability.

This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260331142191/en/

Photo courtesy Cornerstone Building Brands

First introduced in 1909, the Good Housekeeping Seal is widely regarded as one of the most trusted and influential consumer emblems in the U.S., signifying products in a wide range of home, technology, beauty, wellness and consumer categories that have been thoroughly tested for quality, performance and reliability. For homeowners, the Seal provides added peace of mind through an additional two-year limited warranty from Good Housekeeping. If a product bearing the Seal is found to be defective within two years of purchase, Good Housekeeping — not the manufacturer — will replace it or refund up to $2,000 of the purchase price. This protection is provided in addition to Simonton’s own product warranties.

“Customers want to feel confident in the value of the products they choose for their projects and homes — not just today, but for years to come,” said Vishal Singh, President, Windows & Doors at Cornerstone Building Brands. “Earning the Good Housekeeping Seal reflects the care, engineering and testing behind these Simonton products. It also builds greater trust among homeowners and building professionals, giving them peace of mind as they make important buying decisions.”

Products that earn the Good Housekeeping Seal undergo extensive lab testing and hands-on evaluation by engineers, scientists and product experts at the Good Housekeeping Institute to verify performance claims and assess real-world usability.

“Our evaluations are designed to reflect how products perform in real homes,” said Dan DiClerico, Director of the Home Improvement & Outdoor Lab at the Good Housekeeping Institute. “For the Simonton windows and patio doors that earned the Good Housekeeping Seal, our testing verified construction quality, performance and ease of operation — helping consumers feel confident that products that have earned the Seal are built to deliver what matters most to them.”

The newly recognized Simonton products support a wide range of homeowner and project needs:

• Flexibility and Performance: 5050, ComfortSmart and Contractor Double Hung windows are designed to deliver dependable performance, smooth operation, weather resistance and convenient maintenance across replacement and new-construction applications.
• Style and Security: Inovo and Contemporary Sliding patio doors combine expansive views, smooth operation and modern styling while supporting security and weather-resistance expectations for today’s homes.
• Energy Efficiency: Across these products, select glass package options can be specified to meet ENERGY STAR^® performance criteria in any U.S. climate zone, supporting energy efficiency goals while maintaining design flexibility.

Crafted with care in the USA, Simonton-branded vinyl windows and patio doors are designed for long-lasting durability, everyday ease of use and dependable performance. With this latest recognition, Simonton continues to build on an 80-year legacy of quality and innovation that homeowners and building professionals have trusted for decades.

To learn more about Simonton products that have earned the Good Housekeeping Seal, visit simonton.com/goodhousekeeping.

About Cornerstone Building Brands
Cornerstone Building Brands is a leading manufacturer of exterior building products for residential and low-rise non-residential buildings in North America. Headquartered in Cary, N.C., we serve residential and commercial customers across the new construction and Repair & Remodel (R&R) markets. Our market-leading portfolio of products spans vinyl windows, vinyl siding, stone veneer, metal roofing, metal wall systems and metal accessories. Cornerstone Building Brands’ broad, multi-channel distribution platform and expansive national footprint includes approximately 19,400 team members at manufacturing, distribution and office locations throughout North America. Corporate stewardship is embedded in our culture and guides our commitment to responsible growth, environmental care and community impact. For more information, visit us at cornerstonebuildingbrands.com.

About Good Housekeeping
Celebrating more than 140 years, Good Housekeeping (GoodHousekeeping.com) is a leading lifestyle media brand inspiring a monthly audience of 53+ million readers to discover genius innovations, delicious ideas, style-savvy trends, compelling news and best-in-class products for their homes, families and themselves. The Good Housekeeping Institute’s state-of-the-art labs combined with Good Housekeeping’s seasoned editorial talent is unparalleled. Staffed by top engineers, scientists and technology experts, the GH Institute tests and evaluates thousands of products each year for the magazine, website and for the Good Housekeeping Seal and the Green Good Housekeeping Seal, which are among the most recognized and trusted consumer icons in the world today. Good Housekeeping and Good Housekeeping UK are published by Hearst Magazines, a unit of Hearst, a leading global, diversified media, information and services company. Hearst Magazines, the world’s largest lifestyle media publisher, has a portfolio of more than 30 powerful brands in the U.S. that inspire and entertain audiences across all media platforms. Hearst Magazines’ print and digital assets reach 142 million readers and site visitors each month — 55% of all adults in the U.S., 51% of all Millennials and 47% of all Gen Z adults over the age of 18 (Source: 2025 comScore Multi-Platform^© MRI-Simmons – 11/25/S25). The company publishes more than 200+ brand editions and 175 websites around the world. Follow Good Housekeeping on Facebook, Instagram, X, Pinterest, TikTok and on the Inside the Institute blog.

About The Good Housekeeping Institute
The Good Housekeeping Institute is an 18,000-square-foot state-of-the-art consumer testing facility in the LEED Platinum–certified Hearst Tower, set in the heart of Manhattan. In addition to conducting blinded consumer testing, our chemists, engineers and other scientists evaluate thousands of products each year in GH’s cutting-edge labs. Our rigorous expert analysis is key to the unrivaled trust consumers have in the Good Housekeeping brand and the Good Housekeeping Seal, the most recognized consumer emblem in the U.S. for more than 115 years.

About the Good Housekeeping Seal
The Good Housekeeping Seal, launched in 1909 and celebrating more than 115 years, is a widely recognized emblem of quality assurance, backed by the rigorous testing of the Good Housekeeping Institute (GHI). Products that earn the Seal have been evaluated for performance and reliability, offering consumers an extra layer of confidence in their purchases. These judgments are the basis of the Good Housekeeping Consumers' Refund Policy. This is Good Housekeeping's limited warranty: If any product that bears our limited warranty Seal proves to be defective within two years from the date it was first sold to a consumer by an authorized retailer, we, Good Housekeeping, will refund the purchase price or $2,000, whichever is less or, at Good Housekeeping's sole discretion, repair or replace the product. This policy covers you, the consumer, whether you bought the product or it was given to you (by the buyer).

View source version on businesswire.com: https://www.businesswire.com/news/home/20260331142191/en/

Earning the Good Housekeeping Seal reflects the care, engineering and testing behind these Simonton products. It also builds greater trust among homeowners and building professionals, giving them peace of mind as they make important buying decisions.