Contact Ozark Building Supply Inc Contact Us Our Hours: 8:00 am to 4:30 pm Monday thru Friday. andby appointment 10718 Trenton Ave. St. Louis, MO 63132 Sales@OzarkBuildingSupplyInc.com 314-395-0404 Please enable JavaScript in your browser to complete this form.Your Name *Email *Subject *Your Message *MessageSEND MESSAGE