Specialty-branded building products distributor PrimeSource announced July 2 that it acquired Fortress Railing Products — a provider of railing systems based in Garland, TX.

Fortress specializes in designing and distributing customizable steel, aluminum, cable and glass railing systems, including infills, balusters, handrails, lighting and accessories. Its offering includes 12 railing product lines.

“Fortress Railing has been a leader in the outdoor living segment for over 20 years, recognized for quality, durability, versatility and ease of installation,” PrimeSource CEO Tom Koos said in a news release. “The PrimeSource Brands team is eager to collaborate with management to further develop the current outdoor living portfolio,” said Tom Koos, CEO of PrimeSource Brands. “The Fortress Railing team has developed an impressive assortment of products and intellectual property that complement our existing RailFX, Ultra-Tec, CityPost, and Keylink offerings.”

Massumi + Consoli LLP provided legal counsel to PrimeSource and Clearlake. Stifel, Nicolaus and Company, Inc. served as the exclusive financial advisor to Fortress.

The transaction represents PrimeSource’s ninth acquisition since partnering with Clearlake Capital Group in December 2020. It’s the Irving, TX-based company’s first acquisition since the company added CityPost (Spokane Valley, WA) and Harney Hardware (Tampa, FL) both in December 2024.

Operating through two primary brands — PrimeSource Building Products and Dimora Brands — PrimeSource’s product offering spans over 95,000 SKUs that include construction fasteners, knobs & pulls, fencing & railing and functional hardware. The company operates 64 locations across 26 U.S. states and Canada.