20 x 30 x 1  Pre-Pleat 40 MERV 8 A/C or furnace filters. Case of 12 pleated filters manufactured in USA by AAF Flanders. These are good quality filters that are normally supplied to air conditioning contractors through commercial supply houses. Sizing is by industry nominal standards. These filters are out of HVAC company warehouse stock. Box may have warehouse labels or markings. If you have any questions, please contact seller before purchasing.

Size written differently -

20" x 30" x 1"

20x30x1

20"x30"x1"