Pentair Swimming Pool Filter Bottom Tank Assembly Replacement for Clean and Clear Plus and Quad DE Cartridge Filters, Almond. Pentair 178578 Almond Bottom Tank Assembly Replacement Pool and Spa Filter. Seamless Replacement: Specifically designed to replace your current swimming pool filter bottom tank assembly; Fits Clean & Clear Plus and Quad DE cartridge filter, including CCP420 and CCP520. Built to Last: Crafted from durable materials for long-term reliability and performance of your pool filter bottom tank replacement. Simple Installation: Easy-to-follow instructions make installation of the filter tank replacement quick and hassle-free. Effective Filtration: Ensures optimal water filtration, keeping your pool clean and clear year-round; Dimensions (L x W x H): 21.8 x 21.8 x 26.9 inches. Product Dimensions: 26.9 x 21.8 x 21.8 inches. Item Weight: 4 ounces. Item model number: 178578. And we will work with you to resolve it to your satisfaction.