The T&S Brass B-0473 is a durable wall support designed specifically for knee action valves. Constructed from lightweight aluminum, it features a mounting distance of approximately 12 inches from the wall to the valve body. The knee stirrup extends 3 1/4 inches in front, accommodating a basin depth of 20 inches from back to front. For customized installations, longer lengths of up to 24 inches are available as a special order, ensuring versatility for various setups.