Pro-Build Holdings, Denver, CO, supplier of building materials to professional contractors, has purchased Crosslin Supply Company, a distributor of lumber, millwork and building products in the greater Nashville, TN, market.   ; Crosslin, with facilities in Franklin, Spring Hill and Smyrna, TN, is a family-owned and operated business.   ; The team at Crosslin Supply will be a great addition to our existing team in the Nashville area," said Buddy Ables, president, Pro-Build East Region. "Nationally, Nashville ranks in the top 20 markets with respect to permit activity. This acquisition will allow us to better serve our new and existing customers by expanding our network of facilities and products."