At Spiral Manufacturing, we make versatile products that can be used for even the most niche applications. For example, since hemp was legalized in the 2018 Farm Bill, our spiral ventilation ducting has become popular for industrial hemp drying applications.

Having a proper system in place for drying the product is crucial to the success of any industrial hemp or cannabis operation. Hemp can be very particular. If it is not taken directly to a drying facility after being harvested, it runs the risk of growing molds and mildews that will lower its value or render it completely unusable.

Hemp also has very specific environmental requirements that need to be met during the drying process. Ideally, a hemp drying facility should be kept at a temperature between 60 and 70 degrees Fahrenheit, and should have a humidity level of 60%. If hemp is dried too quickly or too slowly, the quality of the end product will suffer.

As the hemp industry has grown, the demand for hemp dryers has increased as well. Hemp dryers are machines that simplify and improve the hemp drying process in a variety of ways. In addition to being more efficient and flexible than the manual hemp drying process, hemp dryers can produce better quality results.

Using a hemp dryer reduces the need for manual labor, and decreases the amount of square footage required to properly dry a hemp crop. This makes hemp dryers both cost effective and convenient.


Hemp dryers also help preserve the integrity of hemp as it goes through the drying process. They operate using low temperatures that protect both cannabinoids and terpenes.

Our spiral ventilation ducting plays an important role in the hemp industry, as it is used by some of our clients to produce the hemp dryers that are so vital to many hemp producing operations.


At Spiral Manufacturing, we are committed to helping our customers succeed, no matter how new or niche their industry may be. To learn more about how our spiral ventilation ducting can be used for industrial hemp and cannabis drying applications, give us a call at 763-755-7677 or send an email to