Greenhouse Sidewall Ventilation Crank farming (1) Insert tray for 3

(1) Insert tray for 3

door frames

Air prune design helps prevent root circling and supports stronger seedling root systems

and stainless steel rods ensure that no harmful chemicals leach into the soil

Custom sizes are also available

Greenhouse Sidewall Ventilation Crank farming (1) Insert tray for 3Ventilate your greenhouse with our side wall ventilation hand crank. Easily vent your roll up curtain sidewalls up to 150 feet long! Features Stainless steel handle, full plastic resin casing for long anti corrosion time The 4: 1 Gear ratio provides easy cranking Self Locking and automatic brake holds sidewall in place The drive shaft fits perfectly inside " EMT conduit. Attachment screws included " EMT conduit guide post not included but easily found