Greenhouse Sidewall Ventilation Crank womens (5) 1020 Blackout Domes

(5) 1020 Blackout Domes

UV blocking: 95% / 350nm

See how we utilized this system on the end wall of a hoop house in this video

height: 100%

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Greenhouse Sidewall Ventilation Crank womens (5) 1020 Blackout DomesVentilate 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