Home Depot bought SRS Distribution — the subsidiary that’s acquiring GMS — last year for $18.25 billion, in the largest acquisition in its history. Texas-based SRS sells supplies to professionals in the landscaping, roofing and pool businesses and it has bought up many other smaller suppliers as it’s grown.

The Home Depot’s SRS Distribution division will purchase GMS, a leading North American specialty building products distributor, for $4.3 billion.

Home Depot is buying specialty building products distributor GMS Inc. in a deal valued at approximately $4.3 billion. Including debt, the deal value totals $5.5 billion.