The Polyester Disposable is constructed with a frame that is thermally bonded to high-loft polystrand media. This media is a traditional multi-denier, designed for general applications. The bottle-cap metal backing is securely bonded to the frame providing dynamic durability. This media is an economical pre-filter to extend the life of your final filters or an adequate filter for less demanding, lower air flow applications. Its durable construction allows for maximum performance and reliability under adverse conditions. Potential applications include retail, commercial, and industrial locations.