Merv Filters LLC 18x18x1 MERV 13 furnace filter is an ideal choice for reducing airborne particles such as dust mites, pollen, mold spores, pet dander, dust and smog. With controlled pleat spacing, our MERV 13 filters provide higher efficiencies and better results than standard pleated filters. These pleated filters are some of the highest quality filters that can keep out particles between 1.0 μm and 0.3 μm, mostly used in hospital and surgical settings, easy to install and have a long service life.
These 18x18x1 MERV 13 filters are designed to last for 90 days; however, you can replace it depending upon the conditions where you live. We recommend you replace your filter every month if you are living near construction sites, you have someone suffering from allergies in your family or you have pets in your home.
If you don’t find the perfect standard size filter, order a high-quality custom furnace and air conditioning filters online, starting as low as $4.99. The payment options we support are American Express, MasterCard, PayPal, and Visa.
Important Note: When you buy a furnace filter online, measure the dimensions of your replacement filter to make sure you get the right size filter. The nominal dimension is used to label filter packages, which is the rounded number of the actual dimension. Like, if the nominal size is 18x18x1, the actual size will be 17.5×17.5×0.75