Emaux E Series Commercial Filter With NozzlesEXCELLENT PERFORMANCE WITH DEEP SAND BED For competition swimming pool, aquatic park, aquarium, spa, fountain and water treatment plant. Emaux is capable to design and manufacture a wide variety of commercial sand filters constructed by a multiple layer moulded structural inner layer, and a continues outer filament winding by computer controlled winding machines. FEATURES 1 Multi construction layers: non corrosive and chemical protective 2 UV