About This ✔️ MERV 11 Rated Replacement 18x20x1 Furnace Filter: AIRx Filters 18x20x1 (Actual: 17.50 x 19.50 x 0.75 in) MERV 11 air filter assures the effectiveness of your home HVAC system resulting to efficient heating, ventilation and air conditioning ✔️ Contaminant Reducing Replacement 18x20x1 Filter: AIRx Filters 18x20x1 air filter replacement (Actual: 17.50x19.50x.75 in). A very high quality 18 x 20 x 1. ✔️High Quality 18x20x1 Furnace Filter by AirX. Air Filter Replacement Material: AIRx Filters 18x20x1 air filter (Actual: 17.50 x 19.50 x 0.75 in) is 100% made in the USA using high quality air filter moisture resistant double-wall beverage board. This is a very solid filter frame for a 18x20x1 filter. ✔️Superior Air Filtration Replacement Construction And Specs: AIRx Filters 18x20x1 air filter uses electrostatically charged 100% synthetic gradient media can perform at temperature ranging from 180F (82C) continuous service, peak 225F (107C). Our furnace filters 18x20x1 can withstand the heat from your furnace! ✔️ 18x20x1 air filter merv 11 Filter Replacement Compatible AIRx Filters 18x20x1 MERV 11 air filter can replace and/or comparable with Allergen Defense MPR 1000 1085 1200, Odor Reduction MPR 1200 18x20x1 air filter Overview Brand : AIRx Filters Product Dimensions : 17.5"L x 19.5"W x 0.75"Th MERV Rating : 11 Compatible Devices : Air Conditioner, Furnace Item Weight : 9.28 ounces Global Trade Identification Number : 00856781006256 UPC : 856781006256 Air Filter Construction : Pleated Number of Items : 1 Manufacturer : AIRx