18x30x1 Furnace Air Filters MERV 10 Pleated Plus Carbon Number Per Box:6 There is a metal mesh

There is a metal mesh support grid bonded to the pleats for extra support

Actual Size: 17 1/4 x 19 1/4 x 3/4 (17

Actual Size: 13 1/2 x 13 1/2 x 1/2 (13

Actual Size: 13 15/16 x 29 15/16 x 3/4 (13

18x30x1 Furnace Air Filters MERV 10 Pleated Plus Carbon Number Per Box:6 There is a metal meshActual Size: 17 3 4 x 29 3 4 x 3 4 (17. 75 x 29. 75 x 0. 75) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores, help eliminate unwanted odors and other contaminants. Ideal for customers who not only need odor control but whose daily life demands high filtration Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 10 is equivalent to MPR 1000