The industry standard for quality and performance for over 30 years. Featuring a one piece, seamless high density polyethylene liner and an encapsulated, leak free engineered polymer inlet, these vessels are designed to provide you with years of worry-free performance. For residential and light commercial water softener/filtration applications 1.25" Dome Port opening available on select sizes for neutralizing applications Slim diameter with capacities from 2 to 49 gallons Unmatched strength and durability 10-year warranty for 6" - 13" vessels