Our new Mini Unit may be used on your small water line in the rear of your refrigerator for an ice maker, the line underneath your sink to the dishwasher, the line in back of a toilet, a water fall, and on any other low volume line you would want to boost. Putting this booster unit on will assure freshly treated water enters your device. Coffee machines with a plumbed water line may also make the most of this unit. At 2 3/4" x 2" x 1 1/4" it will fit in very small areas!