The T&S Brass B-0477 is a durable wall support designed specifically for knee action valves. Constructed from aluminum, it features a modified 15" centerline and positions approximately 12" from the wall to the valve body mounting holes. The knee stirrup extends 3 1/4" in front of the basin, which measures 20" from back to front. For customized installations, longer lengths of up to 24" are available as a special order. This product ensures reliable support and functionality for your plumbing needs.