ProPur BIG Stainless Steel Water Purification - Includes 2 ProBlack-D Domed Hi-Performance Filter Elements (NSF-42 certified) Included are 2 ProBlack-DTM Domed Hi-Performance Water Filter Elements (NSF-42 certified) Constructed of heavy duty brushed and polished stainless steel with no seams to rust or leak! - All metal spigot (brass and zinc) Non-slip base pad included - Limited 2 Year Warranty - Diameter - 9.25" - Nested height for storage 12" - In use height 21.5" - Storage capacity 21 liters or 5.5 gallons Most popular size unit, ideal for small groups of 2-4 people, at home, office, vacation, camping, college dorms!