Top Walmart Deals for October 2025

The Defiant Mark 80-D (DMK) is a medium efficiency pleated filter available in 1 2 or 4 depths and many standard face sizes to accommodate most system requirements. The 100% hydrophobic synthetic media provides nearly 95% average resistance .21 Initial Resistance (In. W.G.). The DMK is effective as a stand-alone filter or prefilter. All DMK filters are made with sophisticated production control techniques to ensure consistent pleat count height shape and spacing. This uniform spacing contributes to a better-performing pleat with low pressure drop full depth dust loading and longer service life. Fully utilizing every square inch result in a slow steady rise in resistance for maximum dust holding capacity. In addition to removing dust pollen and lint in your living and working space they will actively find and trap harmful pollutants like mold preventing allergy and asthma triggers promoting a healthier safe environment. DMK filters will not rack or warp under normal operating conditions. The DMK line has lower resistance levels to aid in your energy savings goals and objectives. Gain 1 Point toward LEED Certification - During the process of new construction install MERV 8-A filters at each return air grille for air handlers used during construction. Conduct a two-week building flush out with new air filters and 100-percent outdoor air prior to occupancy. Rated Efficiency: DMK filters are rated MERV -A 8-A per AHRAE 52.2-2007. Underwriters Laboratories Inc. Classification: Hi-E 40 filters are classified U.L. Class 2 per U.L. Standard 900. Actual Size: 15-1/2 x 15-1/2 x3/4

Find a value pack of high quality replacement furnace filters from SpiroPure. SpiroPure pleated AC & Furnace filters are made in the USA and are the perfect choice for most standard residential and light commercial air conditioner and furnace units. Please measure your existing furnace filter before ordering to ensure that this size will be compatible with your AC & furnace system. MERV 8 rated air filters are the most commonly chosen replacement filter in the home. This is because the 70% to 85% efficiency of size 3 to 10 micron particles that comes with a MERV 8 filter is perfect for removing airborne contaminants without impeding the airflow in your HVAC system. SpiroPureMerv 8 Pleated Filters remove the following household contaminants: Lint & Dust Dust Mite Debris Pollen Mold Spores Pet Dander We recommend replacing your furnace filter every 3 to 4 months for maximum efficiency and cooling and heating system life. A dirty filter restricts airflow which can put too much strain on the system. As a result there can be motor burnout and an overheated system. The leading cause for HVAC system failure is a dirty air filter.

Filter King Merv 8 35x29x1 4-Pack Air Filter actual size is 35x29x1.75. Our 35x29x1 Furnace Filters are designed to last up to 90 days. These pleated 1-inch air filters are ideal for maintaining the efficiency of your heating and cooling systems. Make sure you measure your filter. The actual size of this pleated Merv 8 filter is 35 x 29 x 1-3/4

Filter King Merv 8 15x25x2 4-Pack Air Filter actual size is 14.5x24.5x1.75. Our 15x25x2 Furnace Filters are designed to last up to 90 days. These pleated 2-inch air filters are ideal for maintaining the efficiency of your heating and cooling systems. Make sure you measure your filter. The actual size of this pleated Merv 8 filter is 14-1/2 x 24-1/2 x 1-3/4

Filter King Merv 8 27x48x1 4-Pack Air Filter actual size is 27x48x1.75. Our 27x48x1 Furnace Filters are designed to last up to 90 days. These pleated 1-inch air filters are ideal for maintaining the efficiency of your heating and cooling systems. Make sure you measure your filter. The actual size of this pleated Merv 8 filter is 27 x 48 x 1-3/4