St. Louis SMACNA Trade Show 2019 20 June 2019 Calendar When: September 4, 2019 @ 1:30 pm – 8:00 pm 2019-09-04T13:30:00-05:00 2019-09-04T20:00:00-05:00 Where: Greensfelder Recreation Center - Queeny Park 550 Weidman Rd. Ballwin MO 63011 Contact: Event website Missouri