Mid-Season Maintenance: (5) rooftop units, (1) gas furnace and (1) mini split: (20) 18x24x2; (4) 20x24x2; (1) 20x25x1 standard air filter (4) BX70 belts; (1) A54 belt Belts are during spring PM only Charges are based off of past visits, if it is different then please update, if you are not sure please ask Joe/Tiffany.