Actual size: 19-3/4 inch x 29-3/4 inch x 3/4 inch;Merv 11 tested under ashrae 52.2-2007 standards;Ideal for those with moderate allergies;Moisture resistant, heavy-duty Frame;Galvanized expanded metal backing

• US Home Filter SC60-20X30X1-6 20x30x1 Merv 11 Pleated Air Filter , 20 x 30 x 1
• 20" x 30" x 1"

US Home Filter SC60-20X30X1-6 20x30x1 Merv 11 Pleated Air Filter , 20 x 30 x 1Midwest Supply Inc