American Standard M922992-0020A FEMALE AERATOR 55/64-27UNS 1 GPM Polished Chrome Genuine American Standard repair part FEMALE AERATOR 55/64-27UNS 1 GPM Check your repair part information for compatability Call American Standard's Customer Service at 1-800-442-1902 to see if this part will fit your American Standard product Used by plumbers to repair American Standard products