The Quantity seem good, but there are a few exceptions 1) there is a 5-year warranty yet no information how to contact manufacturer. 20 Shower arm and wand support/water supply has threads only 3/4" long which will not pass through a 1/2" backer broad and tile without some modification. 3) instructions on install not very clear. 4) customer support by wayfair will not give out manufacturers contact information.