Tech found four permanent aluminum 20*20*1 filters for rooftop make up air unit completely deteriorated. See picture. Tech recommends ordering new filters for make up air unit on rooftop. Replaced filters in package units and washed permanent aluminum filter for package unit economizer. Replaced seven 20*20*1 filters in the kitchen area. Did not replace eight 20*20*1 filters in dining area ceiling. See ServiceTitan picture for updated filter count.