An effective greenhouse ventilation system is incredibly important to any grow operation, no matter whether you’re a hobbyist with a smaller structure or a commercial farmer whose massive house protects their livelihood.
Our greenhouse hands crank can roll-up sidewalls up to 300 ft long. It does so with a durable construction of stainless steel in a plastic resin casing designed to combat off long-term corrosion and wear. What’s more, it’s 4:1 gear ratio produces easy cranking and it’s self-locking, automatic brake will ensure that your sidewall will stay where you want it to.
With this hand crank, you’ll have the 
ability to control the temperature and humidity of your greenhouse. It also gives you side usage of both your low and high tunnel hoop houses. It’s even easy to install; just follow these guidelines for guidance about how to integrate this greenhouse curtain crank in to the creation of your greenhouse.
You can’t control the elements, but you can have all-weather control of your greenhouse with our complete roll-up curtain system. Our system includes everything you will require for a long time of continuous operation. No Manual Roll Up For Greenhouse lumber to get, no extra poly fasteners to get; our price includes everything. In addition, you can select a manual crank or an incrementally automated system. Our fabric can be a heavy-duty 12 mil. coated 10’x10′ weave fabric (not 6 mil. poly), solid enough to withstand the abuse of windy conditions and also rocks thrown by lawn mowers and weed-eaters. Growers choose curtains that roll-up from the middle instead of rolling up from the bottom; crank rotations are decreased by 50%, and curtains are kept straight. Inexpensive and simple to operate natural ventilation as well as adaptable to any greenhouse with straight sidewalls.
Roll-up sides have swiftly become the lowest cost way to ventilate greenhouses, high tunnels and hoop houses.
While most growers want roll-up sides because of their structures, the hardware elements associated with roll-ups can often be frustrating. Hopefully this post can help make roll-up side set up simpler.