THE RACE IS OVER. OUR PERFORMANCE ONE BOX STALL DRINKER WINS BY SEVERAL LENGTHS - For corner installations in box stalls--but can be installed outdoors as well. Stainless steel access plates. Foam filled-R value of 7.5 per inch. Model VT100 valve delivers about 2 1/2 gallons (9.5 liters) per minute. Simple water level adjustment, easy to clean. Half moon design on back corner for securing up to a 2 inch (5.1 cm) PVC tube for plumbing from above or below. Degrees C). Double wall, single piece poly construction -- ALL SMOOTH! Internal 3/4" (1.9 cm) AND external 2" (5.1 cm) drains. Drinker is very easy to clean-no disassembly for cleaning required. Optional ground mount tube (Model HT10) for hookup to underground service connections and for outdoor installations. Available in light gray.