This shelf only fits cabinets manufactured before 2019, which do not have a model number containing the letter "X". Justrite Metal Half Shelf for Wall Mount and Aerosol Can Safety Cabinets Metal Half Shelf for Wall Mount and Aerosol Can Safety Cabinets Fits PI77, PI7710, YPI77, YPI7710, 1975, 1976, 1977 cabinets without an X in their item numbers..

If you are unsure which model number you have, please contact customer service..

Justrite Metal Half Shelf for Wall Mount and Aerosol Can Safety Cabinets Metal Half Shelf for Wall Mount and Aerosol Can Safety Cabinets Fits PI77, PI7710, YPI77, YPI7710, 1975, 1976, 1977 cabinets without an X in their item numbers.