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| Best Seller  | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11... ... more | $83.89 $64.53 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11... ... more | $65.12 $50.09 FREE shipping go to store |
| Best Seller  | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11... ... more | $99.78 $76.75 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, heat pump, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy... ... more | $117.23 $90.18 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11... ... more | $212.78 $163.68 FREE shipping go to store |
 | The Filterbuy replacement whole house air filter 20x25.25x3.5 (actual measurements: 19.94" x 25.19" x 3.75") ensures that your furnace, air conditioner, heat pump, or HVAC system is circulating the cleanest air possible to help preserve your budget and... ... more | $91.64 $70.49 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 8... ... more | $38.83 $29.87 go to store |
 | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, heat pump, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy... ... more | $140.24 $107.88 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, heat pump, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy... ... more | $135.49 $104.22 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 13... ... more | $54.85 $42.19 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 13... ... more | $114.86 $88.35 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, heat pump, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy... ... more | $79.40 $61.08 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, heat pump, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy... ... more | $70.79 $54.45 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, heat pump, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy... ... more | $248.82 $191.40 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 8... ... more | $48.95 $37.65 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 13... ... more | $74.20 $57.08 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x2 (actual measurements: 17.75" x 17.75" x 1.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11... ... more | $66.31 $51.01 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 13... ... more | $96.24 $74.03 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x2 (actual measurements: 17.75" x 17.75" x 1.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11... ... more | $101.14 $77.80 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x1 (actual measurements: 17.5" x 17.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11... ... more | $128.54 $98.88 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x1 (actual measurements: 17.5" x 17.5" x 0.75") ensures that your furnace, air conditioner, heat pump, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle.... ... more | $45.10 $34.69 go to store |
 | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. Odor... ... more | $177.92 $136.86 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 8... ... more | $60.02 $46.17 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x20x1 (actual measurements: 17.50" x 19.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. Odor... ... more | $126.45 $97.27 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x1 (actual measurements: 17.5" x 17.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11... ... more | $57.55 $44.27 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x2 (actual measurements: 17.75" x 17.75" x 1.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11... ... more | $207.48 $159.60 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x1 (actual measurements: 17.5" x 17.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11... ... more | $73.48 $56.52 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x1 (actual measurements: 17.5" x 17.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11... ... more | $39.86 $30.66 go to store |
 | The Filterbuy replacement air filter 18x18x2 (actual measurements: 17.75" x 17.75" x 1.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11... ... more | $85.22 $65.55 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x1 (actual measurements: 17.5" x 17.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11... ... more | $65.78 $50.60 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x2 (actual measurements: 17.75" x 17.75" x 1.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11... ... more | $47.37 $36.44 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x2 (actual measurements: 17.75" x 17.75" x 1.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11... ... more | $114.74 $88.26 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x2 (actual measurements: 17.75" x 17.75" x 1.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 13... ... more | $55.78 $42.91 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x1 (actual measurements: 17.5" x 17.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 8... ... more | $112.63 $86.64 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x1 (actual measurements: 17.5" x 17.5" x 0.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 8... ... more | $58.63 $45.10 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x2 (actual measurements: 17.75" x 17.75" x 1.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 8... ... more | $139.31 $107.16 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x2 (actual measurements: 17.75" x 17.75" x 1.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 8... ... more | $54.94 $42.26 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x1 (actual measurements: 17.5" x 17.5" x 0.75") ensures that your furnace, air conditioner, heat pump, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle.... ... more | $87.75 $67.50 FREE shipping go to store |
 | The Filterbuy replacement air filter 18x18x2 (actual measurements: 17.75" x 17.75" x 1.75") ensures that your furnace, air conditioner, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 8... ... more | $70.92 $54.55 FREE shipping go to store |
Ads related to Filterbuy 18x20x1 Air Filter MERV 11, Pleated HVAC AC Furnace Filters Replacement 18.0 H x 20.0 W x 1.0 D in Gray;gold | Wayfair AFB18x20x1M11pk2
