(Completed in 2009) 30' wide Nexus Vail x 60' long glazed with 8mm clear twinwall polycarbonate panels. Teaching greenhouse features full heating and evaporative pad and fan cooling, benches, and motorized shade system. Acme slant wall exhaust fans on north endwall. See double wall heater stack venting heater. PVC downspouts off low ends of greenhouse … Continue reading John Marshall High School – Oklahoma City, OK