Ceramic Dome Replacement Water Filter for Countertop Water System 1 x Ceramic Dome Replacement Water Filter Filter for Zen Water Systems. C eramic Dome Replacement Water Filter: Replace your Filters frequently to ensure optimum performance from your Water Systems. Pore diameter of 0.2 micron while most range from 0.5 to 1.0 micron in size Made of highly compressed ceramic with diatomic properties resistant to extremely high temperature. Ceramic Dome Filter can be used in the following Countertop systems (Sold Separately): 7-STAGE COUNTER-TOP GRAVITY WATER FILTER (6 GALLON CAPACITY) 7-STAGE COUNTER-TOP GRAVITY WATER FILTER (4 GALLON/14L CAPACITY) 7-STAGE GRAVITY WATER FILTER FOR WATER COOLERS/DISPENSERS (4 GALLON CAPACITY) Capacity 22 Litres (approx 5.8 gallons) 14 Litres (approx 3.6 Gallons) 14 Litres (approx 3.6 gallons) Dimensions (Height x Diameter) 25" x 13" 21" x 12" 16" x 12" Weight 7 lbs 5 lbs 6 lbs