FREE Drum Filters is an Asian-based company that produces high-quality stainless steel RDFs & Bakki Showers for koi ponds. They have established themselves as the leading manufacturer in the region and have sold their products in over 10 countries. Their RDFs are known for their simplicity, beauty, durability, reliability, and effectiveness. The filters are designed to operate efficiently in harsh conditions and are made with high-quality, robust, and simple electronic components. Unlike other filters, FREEDrum Filters' products do not use delicate electronic modules that are prone to failure in the harsh koi pond environment. Their filters are made of 99% stainless steel construction, making them long-lasting and reliable.