Rated 4 from 5 by E Lau with the installation was effortless with the Directions offered. I wish that they provided a dishwasher/rubbish-disposal drain adapter because the drain saddle they supplied didn't get the job done for my application. I'd to buy that separately (Watts Leading 164020 DLA-D Drain Line http://buildingpestinspections43435.bloggin-ads.com/7818192/how-much-you-need-to-expect-you-ll-pay-for-a-good-reverse-osmosis-filter-system