If you are reusing abrasive, our Abrasive Sifter Screen can be a real time-saver. Unwanted material, such as pieces of paint and rust, become mixed with abrasive as it recycles within the cabinet. These pieces can clog the nozzle. To keep abrasive free of these particles, simply empty abrasive periodically through bottom trap door. Then pour abrasive through Sifter Screen placed inside the cabinet. If abrasive goes through the screen, it will go through the nozzle. 11-3/8" diameter, 1-3/4" high. Made in USA.