The Home Depot offer trumps the rival bid for GMS by QXO, a construction-supplies company run by Brad Jacobs that recently purchased Beacon Roofing Supply for $11 billion. Earlier this month, QXO had made an unsolicited offer of about $5 billion, or $95.20 a share, for GMS. Home Depot’s $110-per-share offer is nearly 16% higher than that.

Home Depot said on Monday unit SRS Distribution has agreed to acquire specialty building products distributor GMS for about $4.3 billion, stepping up its efforts to capture more demand from professional contractors.

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.