Natural Action Technologies Whole House Structured Water Unit (WHU). Comes only with what you see, there is no original box. Please see coupler ends – they seem (looking at other listings) too be missing brass or copper coupler part that you’ll likely need to connect to copper water lines. If you have pex or similar, ask your plumber if this is a problem. Natural action I’m sure sell spare parts, but your plumber should ask so you get the right part. D of inner hole is about 1-5/16. D of screw-on coupler bracket is about 1-13/16. L including screw-on coupler brackets is about 13-3/8. The item “Natural Action Technologies Whole House Structured Water Unit (WHU)” is in sale since Friday, April 24, 2020. This item is in the category “Home & Garden\Kitchen, Dining & Bar\Small Kitchen Appliances\Water Purification\Water Filters”. The seller is “him-again” and is located in Bountiful, Utah. This item can be shipped to United States.