HDCI HydroCool Insert, 18ga type 304 stainless steel, insert has perforated bottom with 1⁄32” seepage holes, 1” x 7½” long overflow holes are provided on both sides of insert, 1¾” wide flanges on length sides, drain tempering valve, flexible hose with water hammer arrestor & backflow preventer, one piece assembly plus the grating section, patent pending, trough sold separately, made in USAPATENT PENDING, TROUGH SOLD SEPARATELY, Made in USA