(Completed in 2002) 21' x 30' American Plant Products school greenhouse kit featuring 8mm Polygal clear twinwall polycarbonate glazing, polypropylene shade cloth over the greenhouse, rack and pinion pad vent, Koolcel cooling pad system, Acme exhaust fan, HAF fans, Modine unit heater, and more. Fan endwall of greenhouse with hole in 8mm Polygal glazing where … Continue reading Sayre High School – Sayre, Oklahoma