Rietz model RP-12-1K122 disintegrator, serial number RP-727123, 12" diameter x 6" deep screen, 5/8" diameter perforated backing screen, currently installed with 14 each 1" wide x 6" long x 1/2" thick hammers, 25 HP electric motor direct drive, 3535 RPM, wired 230/460/3/60, stainless steel contact, mild steel frame.