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Cultiwool Blocks have an optimum air/water ratio for healthy root growth and allow for great continued rooting thanks to the extremely even distribution of water and EC
Installing yourself is highly not recommended and will void your warranty
The Quonset frame types are the least visually intrusive frame type
Low-bind guide wheels for longer motor life
Greenhouse Manual Sidewall Film Reeler (Hand Crank) retention roll Cultiwool Blocks have an optimumHand cranks are used for manually pulling greenhouse sidewall curtains. If you have a smaller greenhouse that does not use automation, you can use hand cranks to pull your curtains and save on electricity costs. Hand cranks fit standard with a 1 3 8" pipe. You will need a side wall guide pipe (HTD SWRGP) for the reeler to roll up and down during operation.