Chain Crank (AA) 30'x45' ProGuard Sanitization has been tested

ProGuard Sanitization has been tested and validated by reputable labs across the world to ensure safety and effectiveness in reducing mold

Internal memory logs the life cycle count on each relay

J&D Manufacturing's Wall Master greenhouse exhaust fan offers high volume output and smooth

Precision sensors and rugged relays offer reliable and accurate control of

Chain Crank (AA) 30'x45' ProGuard Sanitization has been testedChain cranks (Gear Chain Wheel including Roll Bar Adapter) are used for manually pulling greenhouse light deprivation curtains. If you have a smaller greenhouse that does not use automation, you can use chain cranks to pull your curtains and save on electricity costs.