Gold Cone X-Flo (GCX) filter cartridges are the most advanced dust filters ever made. They feature patented HemiPleat Gold Cone filters that stay cleaner and last longer than conventional pleated filters. Each GCX filter contains 375 square feet of material, providing the industry's highest air to fabric ratio. The innovative design provides a low pressure drop, which means fewer filters are required for a particular application. GCX filters have been specially designed for the X-Flo Gold Series dust collectors. When used together, you get the most powerful and economical dust collection system on the market. The system maximizes airflow while minimizing filter changes, compressed air use and energy costs.