¾" EMT conduit guide post not included but easily found at most hardware stores
A proper 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 hand crank can roll up sidewalls up to 300 feet long. It does so with a durable construction of stainless steel in a plastic resin casing designed to fight off long-term corrosion and wear. What’s more, it's 4:1 gear ratio makes for 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 be able to control the temperature and humidity of your greenhouse. It also gives you side access to both your low and high tunnel hoop houses. It’s even easy to install; just follow these instructions for guidance on how to integrate this greenhouse curtain crank into the creation of your greenhouse.
Why Ventilate your Greenhouse?
Greenhouse Cooling and Humidity Control
Controlling greenhouse humidity with some ventilation system is a must in just about any climate. Even in cooler climates greenhouse temperatures can reach extreme levels. Your plants are more likely to die in a greenhouse from excessive heat than temperatures that are too cool.
Pests and Disease Prevention
Proper greenhouse air circulation is also critical for healthy plants. By rolling up your side curtains you allow stale air to get pushed out of your greenhouse leading to healthier plants with less disease and pest problems. Many common greenhouse pest and diseases thrive on stale and humid air. Rolling up your sidewalls will allow air to naturally circulate reducing incidences of these common problems.
Growing in a greenhouse without natural air circulation can cause poor pollination of your plants. A breeze naturally sends pollen around your greenhouse so you can avoid the hassle of hand pollinating every plant. If you are noticing poor pollination or poor fruit setting this is a sign that you may need to be increasing the airflow into your greenhouse.
Keeping Your Greenhouse Ventilated
During the hot summer months its critical to keep your greenhouse well ventilated. In our area at the southern coast of North Carolina we get average highs in the lower 90s with high humidity. Without proper greenhouse ventilation temperatures inside can easily exceed 115°. To keep your plants cool during periods of high heat we simply just roll up our sidewalls and keep both end wall doors open. This allows air to naturally keep our greenhouse cool and our plants safe from excess heat.
Free shipping on orders over $49 to Contiguous US
Most products will ship from our facility in 1 to 2 business days after the order is placed. Express shipments placed after 12PM EST will be shipped out next business day. Full details can be found on our Shipping Policy Page
Returns can be made on most products within 30 days of purchase. After 30 days we unable to offer a refund or exchange. Certain products are non-returnable. For full details visit our Returns Policy