Protect your greenhouse or grow tent plants while maintaining airflow with this 6-inch HEPA intake filter. This filter easily attaches to fans and blowers for better air quality. This intake filter features tightly woven synthetic HEPA fibers. The filter easily attaches to fans or blowers. Simply slide the rubber collar over the inlet or outlet side, and then secure the HEPA filter by using the provided clamp. To maintain the efficiency of this HEPA air filter, clean the filter with a water hose as needed. This low-maintenance HEPA air filter is a handy tool for professional greenhouses, residential grow houses, or in agricultural settings.