The finest quality in sand filters : Designed and engineered using the latest European technology and machinery. Manufactured in laminated polyester resin reinforced with fiberglass with a unique polished finish. Extensive range of diameters that meets the need of the filtration in public and private swimming pools as well as in spas. 6-position multiport valve that easily controls the operation and maintenance of the filter. Top sand change lid with 300mm diameter equipped with an easily to read pressure gauge and with manual air vent. Water purge in the low of part of the filter that facilitates the maintenance operations fitted with corrosion-proof collectors and diffuser that enhances the capacity of filtration.