US Home Filter SC40-18X30X1-6 18x30x1 Merv 8 Pleated Air Filter (6-Pack)， 18" x 30" x 1"</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Actual size: 17-5/8 inch x 29-5/8 inch x 3/4 inch</li><li>Merv 8 tested under ashrae 52.2-2007 standards</li><li>Ideal for normal air filtration and those with mild allergies</li><li>Moisture resistant， heavy-duty Frame</li><li>Galvanized expanded metal backing</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/51R77U2Z7rL.jpg' noproxy></br>