American Construction Source, a Springfield, Missouri-based building materials distributor backed by Angeles Equity Partners LLC and Clearlake Capital Group LP, this week announced the acquisition of Builder’s Resource Group, Woodville, Wisconsin. Financial terms of the deal weren’t disclosed.

BRG will operate under the Arrow Building Center brand already established in Minnesota and Wisconsin. BRG marks the eighth acquisition by ACS under its backing from Clearlake and Angeles.

“ACS welcomes the BRG team to our growing portfolio of service-oriented lumber and building materials locations,” said James Drexinger, CEO of ACS. “BRG has built a great business, and we are excited to partner with them and their customers.”

Added Mike Baron, owner and general manager of Builder’s Resource Group: “We are thrilled to join the ACS platform as part of the Arrow Building Center team. The ACS track record of integration and growth, combined with the investment experience and value creation capabilities of Angeles and Clearlake, will enable us to better serve BRG customers and accelerate the growth of the business.”

Simpson Thacher & Bartlett LLP provided legal counsel to ACS.