10 x 20 x 2 MERV 8 Furnace / Air Conditioner Filter. Case of 12 filters.Proper filtration is the first step to creating a Healthy Living Environment. Pleated filters offer better filtration than standard fiberglass filters filter out more particulate and are available in several ratings to meet your individual needs.Filters last up to 3 months!Actual Size 9.5 x 19.5 x 1 3/4 10 x 20 x 2 Pleated Panel Air Filter. Case of 12 filters.MERV 8Premium Quality15 Pleats per Lineal Foot38.1 EfficiencyNotesDQP40 Pleated Filters are available in 1 2 and 4 depth. Theelectrostatically charged 100 synthetic graduated density media iscontinuously bonded to a 30 gauge galvanized corrosion resistantexpanded metal support grid with an effective open area of 96. Themedia is resistant to a wide range of chemicals does not absorb moistureand will not support microbial growth.The controlled pleat spacing maximizes surface area and dust holdingcapacity and is bonded to the enclosure frame to prevent dust bypass.The enclosure frame is constructed of high wet strength moisture resistantbeverage board. The diagonal support members of the frame are bondedto the entering and exiting apexes of each pleat to prevent pleat collapseand filter bowing.