The filter element keeps the water in the jacuzzi clean. They are easy to install and maintain. They just need regular rinsing under the tap. However, if they are still dirty or discolored after rinsing, they must be replaced. Otherwise, the filter pump may be damaged. The product is an inflatable swimming pool filter mesh bag (2020 model), which is only applicable to inflatable swimming pools produced after 20 years Compatible Models: Compatible with Delight, Premium, Elite, Concept models of Aurora, Mont Blanc, Mono, Alpine, Camaro, Nest, Soho, Baikal, Starry, Bliss and Silver Cloud Product size: width 105*height 68*inner diameter 54mm Product weight: 9.3g Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.