- Functionality. The advanced technology developed for Cantabric filters provides exceptional operational reliability with minimal maintenance, allowing the filters to operate safely with optimal pool filtration for many years. The equipment also includes an AstralPool 6 + 1 multiport valve with filter, backwash, rinse, recirculation, vent and closed position. - Innovative design. In addition to functionality, AstralPool is engaged in creating a new image for its Cantabric filters, an approach that has resulted in a product with an attractive, unique design based on the use of ivory tone and innovative shape, as well as a focus on adaptability to the need for location. - Extensive assortment. Cantabric filters provide the ideal solution for a wide range of pool sizes as they meet the filtration needs of pools from 30 to 240 m3 with flow rates from 6,000 to 30,000 l / h at a filtration rate of 50 m3 / h / m2.