The Quill Drinker is unique among all other nipple systems, to take poultry, game and ducks from day old right through to adults. Use for inside or outside, on any slope or gradient and provides water in an extremely hygienic manner. One Quill drinker can accommodate up to 250 birds. Connects to a low PSI (less than 5 PSI) water source. Includes adjustable cord to suspend from a coop roof. Install dimensions 32" L x 18" H with an 8" valve that attaches (adding height). And the flat triangle drinker is about 1 1/2" thick.