Vertex 9" Replacement Diffuser Disc

9" Vertex®, MicronBubble replacement diffuser disc.  Fits all Vertex® AirStations/Diffusers Self-cleaning and low maintenance EPDM compound with 100% rebound memory Flexible, long-wearing, and clog-resistant even in the dirtiest water bodies Highly efficient even during low or moderate air flows FlowControl™ technology equalizes airflow to each disk  Energy-efficient die-cut perforations with a "Delta" surface pattern increase active surface area and aeration efficiency.  StableTrak™ technology increases lift velocity Comes with a five year, no questions asked Vertex® warranty Made in the U.S.A. * The plastic border color has been changed from purple to white, temporarily, due to supplier shortages.  Technical Specifications