The DIW-20 is our high-output wall-mounted system, providing approximately 300 gallons of deionized, spotless water based on your tap water quality. NOW AVAILABLE: Integrated Resin Bypass Our new Integrated Resin Bypass model allows you to effortlessly switch between tap water for washing and deionized water for a spotless rinse. This simple valve maximizes resin life by making it easy to use DI water only when needed. Integrated single-valve resin bypass No assembly required SYSTEM INCLUDES: Dual 20-inch resin filter cartridges Battery-operated water purity indicator (TDS Meter) PVC hose quick-connectors Stainless steel hose (Standard Model only) Filter wrench Spray nozzle* *Maximize your filter's DI water production by using the spray nozzle on the flat or center setting to restrict flow to less than 2.5 gallons per minute. DIMENSIONS: 28" x 18" x 8" Please allow 4"clearance at the bottom when wall-mounting to allow space for filter replacements.