JBL Aqua Combination block jbl cristalprofi

Clean, healthy water: pre-filtration insert and filter foam for the upper basket of CristalProfi e filters (402/702/902/1502/1902). To use: place insert in upper filter basket. Remove old sponges and replace with new ones. Precise laser-cutting ensures perfect fit with JBL CristalProfi e external filters. Inert to fresh and sea water, no pollutant release Includes: 3 filter inserts: 2 coarse foam 15 ppi, 1 fine foam 35 ppi