Extremely durable 8" x 35" (25 litre volume) structural pressure vessel complete with deionisation resin to 'polish off' and purify your water 100%. All our resin vessels come complete with 'hoselock' type inlet and outlet fittings to join into 1/2" garden type hose. (see image). We also sell the vessels empty - see the Empty DI Filters page for empty resin vessels.