Fans & Ventilation

Thermatic-Vent®

Automatic cold frame vent USES NO ELECTRICITY! Opens and closes by a temperature-sensitive spring mechanism. Range 40ºF to 70ºF. Install one front vent for intake and one high in the back for a warm air exit. Size: 10" x 18" x 3.5" Easily installs in...

Thermostatic Outlet

Simple plug-in temperature control The Thermo Cube® is thermostatically controlled and turns power on and off automatically, according to outside ambient air temperature. Best of all it saves money by using power only when the temperatures require...

Univent Automatic Vent Opener

Multiple uses - C3515 This unique solar vent control will open and close roof vents, a cold frame lid, top-hinged wall vents, or even the greenhouse door. It features two closing springs for extra strength. The Univent solar vent opener is the only...

Wall Mount Oscillating Fan, 12"

Free Shipping Improve your air circulation - C3067 This handsomely-styled 3-speed, 12" fan provides the best type of air circulation. The oscillating action gives plants a short, brisk breath of fresh air that does the best job of removing stale air...

Wall Thermostat

Free Shipping Economical control Automatic control for greenhouse fans or motorized vents. Fits standard recessed electrical wall box. Working range is 40°-90° F. Dial markings: 50°-90° F. Rugged internal design features snap-action...

Waterproof Greenhouse Thermostat

Reliable control - E3124 This quality thermostat will automatically control a fan system or heater. The moisture-proof case offers protection from the wet greenhouse climate. The external stainless steel temperature sensor is very accurate and quick to...

Weather Hood for Exhaust Fans & Shutters

Weather protection Protect your shuttered exhaust fan and shutters against harsh weather and severe wind. Extend their life. Our galvanized-steel weather hoods are a perfect fit for J&D’s ES ShutterFans, Twister Fans and Shutters, and will also...