Greenhouse Sidewall Ventilation Crank Shirt 30% Northern Zones - Mixed

30% Northern Zones - Mixed Vegetables 50% Southern Zones & Tomatoes

It can act as low-flow flood protection for redirecting water

Measures Electrical Conductivity (EC)

Its innovative design

pointed tip

Greenhouse Sidewall Ventilation Crank Shirt 30% Northern Zones - MixedVentilate 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