The Delta 1 Water Filter Kit contains both hot and cold water filter housings and filter cartridges, as well as all connections and mounting brackets need to provide your darkroom with clean sediment free water for washing and developing your prints.
The filter set was to be used to remove solid contaminates from my hot and cold water. It was designed to be plumbed into existing piping. Both filters were exactly the same, there was no distinction between the two. There was a missing gasket for one of the filter reservoirs. One of the brackets to attach the filter to the wall was broken. The directions for installation were so poorly written that they were useless. The kit was supposed to have all parts needed to install. The plastic barbed connectors leaked so I had to go buy hose clamps to prevent leakage. It was such a hassle That I ended up buying plumbing parts and mounting one filter to my faucet end. Its cheaper and works better then in line plumbing. Skip the kit. Buy the hot water filter, your own hardware, and mount it to the end of a faucet with plastic tubing and hose connectors.