SPRINGFIELD, N.J., Oct. 12, 2026 /PRNewswire/ — United Window & Door Manufacturing, Inc. (“UWD”), a leading manufacturer of vinyl windows and doors based in New Jersey, today announced it received a strategic growth investment from The Sterling Group (“Sterling”), an operationally focused middle market private equity firm. Sterling’s investment will support the company’s expansion into new geographies and the broader enhancement of service levels, which include building a planned state-of-the-art manufacturing facility in Tennessee. Howard Rose and Nick Derrico, Co-Founders of UWD, will continue to lead the business.

United Window & Door is one of the largest and fastest-growing regional manufacturers of high-quality vinyl windows and doors in North America. Founded in 1988 by Howard Rose and Nick Derrico, UWD serves over 2,000 points of distribution and is known for innovation, exceptional service, and operational excellence.

“We believe Howard and Nick have built an exceptional business with a history of consistent growth and tremendous upside potential,” said Kent Wallace, Partner of The Sterling Group. Johann Friese, Director of The Sterling Group, added, “We look forward to collaborating with the UWD team as they execute their strategic plan, including scaling the company’s manufacturing footprint with the planned Tennessee plant as well as other geographic expansion projects. We are pleased to support UWD’s continued success.”

“We are excited to partner with Sterling as we enter UWD’s next phase of growth,” said Howard Rose, Co-Founder of United Window & Door. “This investment will enable us to pursue our strategic initiatives, including extending our reach while maintaining the operational excellence that our loyal customer base has come to expect.”

“Sterling is the ideal partner as we look to the future and expand our capabilities and geographic footprint to serve our customers more effectively,” added Nick Derrico, Co-Founder of United Window & Door.

The Sterling Group has a long history of collaborating with families, entrepreneurs, and their leadership teams to support the growth of their businesses.

RBC Capital Markets, LLC acted as exclusive financial advisor to United Window & Door. FBT Gibbons served as legal advisor to United Window & Door, and Latham & Watkins served as legal advisor to The Sterling Group.

About United Window & Door

Founded in 1988, United Window & Door is a leading manufacturer of premium vinyl windows and patio doors for residential and light commercial applications. Operating out of three modern facilities in New Jersey, UWD sells through a diverse base of lumber distributors, specialty distributors, and retailers that serve homebuilders and contractors throughout the eastern United States. With a focus on quality, innovation, and service, UWD has historically demonstrated consistent organic growth and strong profitability. For more information, visit www.unitedwindowmfg.com.

About The Sterling Group

Founded in 1982, The Sterling Group is a private equity and private credit investment firm that targets investments in basic manufacturing, distribution, and industrial services companies. Typical enterprise values of these companies at initial formation range from $100 million to $1 billion. Sterling has sponsored the buyout of 80 platform companies and numerous add-on acquisitions for a total transaction value of over $28 billion. Sterling currently has approximately $9 billion of assets under management. For further information, please visit www.sterling-group.com.

Past performance is no guarantee of future results and all investments are subject to loss. Forward-looking statements reflect current intentions only and are subject to change without notice. No assurance can be given that the objectives or results described herein will be achieved.

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SOURCE United Window & Door Mfg. Inc.