Schaefer’s “Fixed Mount Circulation Fans” offer a wide range of airflow solutions ideally suited for horticulture and greenhouse environments. The lineup spans from compact 12″ fans designed for gentle, uniform air movement to powerful 36″ units capable of delivering high-volume circulation essential for healthy crop growth. These fans help maintain consistent temperatures, reduce humidity pockets, and support strong, uniform plant development throughout a greenhouse. Most models feature durable, corrosion-resistant steel guards and direct-drive motors- important benefits in humid horticultural settings- and are manufactured in the U.S. Their performance varies by size, with large models like the 36″ Direct Flow producing over 13,000 CFM for large growing spaces, while smaller units provide targeted airflow for tighter production zones.

Featuring a variety of control devices designed to regulate fans and heaters for greenhouse ventilation systems. 

Models include a manual speed controller (MSC-400), two manual speed controls for different voltages (H-115 and H-230), a PC-compatible control (PEC-PLUS), a humidistat (THC-1), and two thermostats (a 1-stage and a 2-stage heat/cool thermostat, TP518 and TP520). 

These controls cover a range of needs, from simple manual speed adjustment and humidity-based control, to automated, temperature-based control of heating and cooling systems.