Integrated Openings Solutions Announces Acquisition of Design Supply Doors
Acquisition strengthens IOS’s presence in Kansas City and surrounding markets while expanding integrated door, hardware, and specialty solutions.
Olathe, KS
Integrated Openings Solutions (IOS), a national provider of commercial door openings and integrated security solutions, today announced the acquisition of Design Supply Doors, a Kansas City-based subcontractor that offers doors, frames, hardware, and Division 10 specialties. In addition to its comprehensive supply and installation services, Design Supply Doors crafts custom wood door modifications and delivers tailored solutions across commercial projects.
Founded in 1985, Design Supply Doors specializes in hollow metal doors and frames, commercial wood doors, and hardware. The company seeks to serve contractors, architects, and building owners with reliability and craftmanship.

For Design Supply Doors, the acquisition marks both a new chapter and a continuation of its legacy. Rebecca Stowe, Owner and CEO of Design Supply Doors, commented: “For almost four decades now, our team has taken pride in delivering trusted door and hardware solutions with a focus on service and reliability. Joining forces with IOS allows us to build on that legacy while offering our customers expanded resources, deeper expertise, and the strength of a larger network. We’re excited about what the future holds.”
“At Design Supply Doors, we’ve always prided ourselves on being true ‘door nerds’ — passionate about the details, committed to quality, and focused on building lasting relationships with our customers,” said Toby Stowe, President of Design Supply Doors. “Joining IOS gives us the resources and support to continue doing what we do best, while expanding the opportunities for our team and the customers we serve in Kansas City and beyond.”
Integrated Openings Solutions
Integrated Openings Solutions (IOS) is based in Olathe, KS, with additional locations throughout the Southeast. The company is an established value-added specialty distributor of commercial door and access control solutions. The company offers a wide range of products and services, including commercial door opening products, security integration solutions, and installation, maintenance and repair services. The company has established itself as a super-regional player in some of the fastest-growing areas of the country while serving customers across a diverse base of commercial end markets including education, government, healthcare, hospitality, multi-family, and retail. For more information, please visit www.integratedopenings.com.
About Design Supply Doors
Founded in 1985 and family-owned for two generations, Design Supply Doors is a subcontractor based in Kansas City specializing in commercial doors, frames, hardware, and Division 10 specialty products. Known for its knowledgeable “Door Nerds” team, the company offers design-build services, installation, repair, replacement, and maintenance contracts. With a reputation for quality, customer service, and reliability, Design Supply Doors has built lasting partnerships across industries including education, healthcare, multi-family, and government. For more information, please visit www.designsupplydoors.com.
About Frontenac
Frontenac is a Chicago-based private equity firm. The firm focuses on investing in lower middle market buyout transactions in the consumer, industrial, and services industries. Frontenac works in partnership with established operating leaders, through an executive-centric approach called CEO1ST®, which seeks to identify, acquire, and build market-leading companies through transformational acquisitions and operational excellence. Over the last 50+ years, Frontenac has built a franchise working with over 325 owners of mid-sized businesses as they address complex transition issues of liquidity, management enhancement, and growth planning. For more information, please visit www.frontenac.com.