2.0 Cold Plunge - Tub OnlyTHIS LISTING IS FOR THE TUB ONLY (NO CHILLER INCLUDED) The tub comes with two ports of female 3 4" NPT fittings that you can use to attach a chiller. If you are wanting to use the tub with ice. The ports will come pre installed with half of a union that we use on our full unit so you will need to unscrew that union to access the 3 4" female NPT port as seen in the video below: Modtub 2. 0 is a modern, USA made cold plunge built for comfort,