514 results
- Aerostar 18x18x1 MERV 6 Pleated Air Filter, AC Furnace Air Filter, 6 PackOpens in a new window or tabBrand New$22.52Was: $26.5015% offBuy It NowFree shippingFree returnsSave up to 5% when you buy moreaerostarfilters (11,619) 99.4%
- Aerostar 18x18x1 MERV 6 Pleated Air Filter, AC Furnace Air Filter, 12 PackOpens in a new window or tabBrand New$45.03Was: $52.9815% offBuy It NowFree shippingFree returnsAlmost gone18 soldSave up to 5% when you buy moreaerostarfilters (11,619) 99.4%
- PERMANENT WASHABLE ELECTROSTATIC FURNACE AC AIR FILTER Dust ElectronicOpens in a new window or tabBrand New$19.99 to $109.95Buy It NowFree 2-4 day shipping121+ soldSave up to 20% when you buy morefiltereverything (5,597) 99.4%
- Aerostar 18x18x1 MERV 8 Furnace Air Filter, 6 PackOpens in a new window or tabBrand New$38.96Was: $45.8415% offBuy It NowFree shippingFree returnsAlmost gone22 soldSave up to 5% when you buy moreaerostarfilters (11,619) 99.4%
- 18x18x1 MERV 8 Pleated AC Furnace Air Filters. 6 Pack. Made in USAOpens in a new window or tabShips out same or 1 Day. Free 90 Day Return Shipping.Brand New$38.74Buy It NowFree 2-3 day shippingFree returns500 soldSave up to 12% when you buy moreTop Rated Plusfiltersdelivered (20,780) 99.9%
- 18 x 18 x 1 Standard Pleated Air Filter FPR 5, 3-Pack, Air Filters ReplacementOpens in a new window or tabBrand New$15.67Buy It NowFree 2-4 day shippingFree returns95 soldship*captain (8,420) 99%
- 1" Inch Glasfloss ZL MERV 10 Pleated Air Filters for AC & Furnace. 6 PackOpens in a new window or tabSave 10% when you Buy 2 or More packs of Any Size!Brand New$35.98 to $53.44Buy It NowFree 2-3 day shippingFree returns80+ soldSave up to 15% when you buy moreTop Rated Plusfiltersdelivered (20,780) 99.9%
- 18 X 18 X 1 Standard Pleated Air Filter FPR 5 3-PackOpens in a new window or tabBrand New$16.07Buy It NowFree shippingFree returnsbuyquality2011 (705) 99.1%
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Sponsored | Top selling items from highly rated sellers with free shipping- Aerostar 18x18x1 MERV 6 Pleated Air Filter, AC Furnace Air Filter, 6 PackOpens in a new window or tab$22.52aerostarfilters (11,619) 99.4%Save up to 5% when you buy more
- Aerostar 18x18x1 MERV 6 Pleated Air Filter, AC Furnace Air Filter, 12 PackOpens in a new window or tab$45.03aerostarfilters (11,619) 99.4%Almost goneSave up to 5% when you buy more
- Filterbuy 18x18x1 Pleated Air Filters, Replacement for HVAC AC Furnace (MERV 8)Opens in a new window or tab$86.64filterbuyinc (11,689) 100%53+ sold
- Aerostar 18x18x1 MERV 13 Furnace Air Filter, 6 PackOpens in a new window or tab$50.41aerostarfilters (11,619) 99.4%Almost goneSave up to 5% when you buy more
- (3-PACK) 18x18x1 Air Filter Standard Pleated Furnace AC Filtro de aire PlisadoOpens in a new window or tab$15.98bc_home_and_garden (7,380) 99.4%82 sold
- Aluminum Electrostatic A/C Furnace Filters - Central HVAC Air PurifierOpens in a new window or tab$21.69lifesupplyusa (40,040) 99.1%Save up to 15% when you buy more
- 1 PACK or 3 PACK - Air Filter Standard Pleated FPR 5 Dust Filters Furnace ACOpens in a new window or tab$19.90americandealz2014 (19,136) 98.6%16+ sold
- AAF Flanders 10055011818 Fiberglass Furnace Filter 18 x 18 x 1 in. (Pack of 12)Opens in a new window or tab$41.87max_warehouse (354,463) 98.9%
- FILTRETE- AIR-FILTER PLEATED FURNACE REPLACEMENT PAD DUST PACK 3, 6, 12 NEWOpens in a new window or tabNEW | BEST PRICE | LIMITED QUANTITY |Brand New$23.89 to $62.89Buy It NowFree shippingFree returnsmkm-store (1,046) 99.4%
- Filterbuy 18x18x1 Pleated Air Filters, Replacement for HVAC AC Furnace (MERV 8)Opens in a new window or tabBrand New$26.10 to $86.64Buy It NowFree 2-3 day shippingFree returns126+ soldTop Rated Plusfilterbuyinc (11,689) 100%
- 1 PACK or 3 PACK - Air Filter Standard Pleated FPR 5 Dust Filters Furnace ACOpens in a new window or tabBrand New$6.97 to $24.90Buy It NowFree 2-4 day shipping16+ soldamericandealz2014 (19,136) 98.6%
- 18 x 18 x 1 Standard Pleated Air Filter FPR 5, 3-Pack, Air Filters ReplacementOpens in a new window or tabBrand New$14.99Buy It NowFree shippingfrom Pakistantooltroves (10) 100%
- (3-PACK) 18x18x1 Air Filter Standard Pleated Furnace AC Filtro de aire PlisadoOpens in a new window or tabBrand New$15.98Buy It NowFree 2-4 day shipping82 soldbc_home_and_garden (7,380) 99.4%
- Aerostar 18x18x1 MERV 13 Furnace Air Filter, 6 PackOpens in a new window or tabBrand New$50.41Was: $59.3015% offBuy It NowFree shippingFree returnsAlmost gone45 soldSave up to 5% when you buy moreaerostarfilters (11,619) 99.4%
- 18x18x1 AC and Furnace Air Filter by Aerostar - MERV 8, Box of 12Opens in a new window or tabBrand New$69.22Was: $81.4315% offBuy It NowFree shippingFree returns16 soldSave up to 5% when you buy moreaerostarfilters (11,619) 99.4%
- Aerostar 18x18x1 MERV 11 Furnace Air Filter, 4 PackOpens in a new window or tabBrand New$37.77Was: $44.4315% offBuy It NowFree shippingFree returnsSave up to 5% when you buy moreaerostarfilters (11,619) 99.4%
- 18x18x1 Air Filter Standard Pleated Furnace AC FPR 5 MERV 8 (1-3 PACK)Opens in a new window or tabBrand New$7.77Buy It NowFree shippingFree returnsllau7309 (266) 99.5%
- 3-Pack Standard Pleated Air Filter 18x18x1, Air Filters Replacement FPR 5 MERV 8Opens in a new window or tabBrand New$15.39Buy It NowFree shippingfrom Vietnambrian_kstore (880) 99.4%
- Filtrete 18x18x1 Air Filter MPR 300 MERV 5 Dust Reduction 4 Filters Air FiltersOpens in a new window or tabBrand New$26.38or Best OfferFree shippingLast one29 soldbeibei26026 (66) 100%
- 18X18X1 In. Allergen Plus Standard Pleated Air Filter FPR 7 MERV 11 Dust HoldingOpens in a new window or tabBrand New$17.32Buy It NowFree shippingFree returnsaba_9014 (54) 100%
- 18 x 18 x 1 Standard Pleated Air Filter FPR 5, 3-Pack, Air Filters ReplacementOpens in a new window or tabBrand New$19.22Was: $27.4630% offor Best OfferFree shippinggbma45 (4,250) 99.3%
- Filtrete Air-Filter Basic Pleated Furnace Replacement Pad Dust Pack Lot 3M 6 12Opens in a new window or tabBrand New$12.99 to $79.99Buy It NowFree shippinghappyproductssales (2,846) 98.9%
- AAF Flanders 10055011818 Fiberglass Furnace Filter 18 x 18 x 1 in. (Pack of 12)Opens in a new window or tabBrand New$41.87List price: $50.2417% offBuy It NowFree shippingFree returnsmax_warehouse (354,463) 98.9%
- 18x18x1 in. Standard Pleated Furnace Air Dust Filter Performance FPR 5 MERV 8Opens in a new window or tabBrand New$7.77Buy It NowFree shippingFree returnssash_5316 (14) 100%
- 18"x 18"x 1" 2 pack AC Furnace Air Filter Rigid Washable Cut to FitOpens in a new window or tabOpen Box$20.47Buy It NowFree shippingFree returns150 soldTop Rated Plusaqua-flo (14,472) 99.2%
- 1-Pack Standard Pleated Air Filter 18x18x1, Air Filters Replacement FPR 5 MERV 8Opens in a new window or tabBrand New$7.76Buy It NowFree shippingfrom Vietnambrian_kstore (880) 99.4%
- E-Z flow II 18x18x1 Air Filter Pack of 12Opens in a new window or tabBrand New$44.95Buy It NowFree shippingFree returns56 soldtim_hardware (61,664) 99.5%
- 18 X 18 X 1 Standard Pleated Air Filter FPR 5 3 Pack Non-Electrostatic SyntheticOpens in a new window or tabBrand New$16.20Buy It NowFree shippingFree returnsLast onematanta_86 (211) 98.6%
- Aerostar 18x18x1 MERV 11 Furnace Air Filter, 6 PackOpens in a new window or tabBrand New$50.91Was: $59.8915% offBuy It NowFree shippingFree returnsSave up to 5% when you buy moreaerostarfilters (11,619) 99.4%
- Filterbuy 18x18x1 Pleated Air Filters, Replacement for HVAC AC Furnace (MERV 11)Opens in a new window or tabBrand New$28.92 to $98.88Buy It NowFree 2-3 day shippingFree returnsTop Rated Plusfilterbuyinc (11,689) 100%
- PERMANENT WASHABLE ELECTROSTATIC FURNACE AC AIR FILTER Dust Electronic USAOpens in a new window or tabBrand New$19.99 to $109.95Buy It Now+$17.04 shippingSave up to 20% when you buy morefiltereverything (5,597) 99.4%
- Aluminum Electrostatic A/C Furnace Filters - Central HVAC Air PurifierOpens in a new window or tabBrand New$13.99 to $8,821.89Buy It NowFree shippingFree returnsSave up to 15% when you buy moreTop Rated Pluslifesupplyusa (40,040) 99.1%
- 18 x 18 x 1 Standard Pleated Air Filter FPR 5, 3-Pack, Air Filters ReplacementOpens in a new window or tabBrand New$16.40Buy It NowFree shippingblissful-bazaar-llc (4,187) 99.6%
- FILTRETE- AIR-FILTER PLEATED FURNACE REPLACEMENT PAD DUST PACK 3, 6, 12 NEWOpens in a new window or tabLIMITED TIME SALE | BIG DISCOUNT | FREE SHIPPING | NEWBrand New$23.89 to $62.89Buy It NowFree shippingarcsales-ltd (118) 100%
- 18x18x1 Second Nature Mini Pleat MERV 11 Air Filters 5 Pack New.Opens in a new window or tabBrand New$10.000 bids · Time left3d 9h left (Wed, 06:30 AM)$40.00Buy It Now+$7.43 shippingheatherandmarc (124) 100%
- (3-PACK) 18x18x1 Air Filter Standard Pleated Furnace AC Filtro de aire PlisadoOpens in a new window or tabBrand New$15.95Buy It NowFree shippingFree returnsamhgloballlc (339) 96.6%
- Filtrete Air-Filter Basic Pleated Furnace Replacement Pad Dust Pack Lot 3M 6 12Opens in a new window or tabBrand New$24.99 to $65.98Buy It NowFree shippingFree returnsmkm-store (1,046) 99.4%
- 18x18x1 Air Filter Standard Pleated Furnace AC FPR 5 MERV 8 (3 PACK)Opens in a new window or tabBrand New$18.99Buy It NowFree shippingzorrofurniture (55) 98.2%
- 18x18x1 AC and Furnace Air Filter by Aerostar - MERV 11, Box of 12Opens in a new window or tabBrand New$77.75Was: $91.4715% offBuy It NowFree shippingFree returnsAlmost gone24 soldSave up to 5% when you buy moreaerostarfilters (11,619) 99.4%
- Filter King 18x18x1 Air Filter 6-PACK MERV 13 Actual Size 18 x 18 x .75"Opens in a new window or tabBrand New$84.94Buy It NowFree shippingfilterkingllc (211) 100%
- NEW 6 Pack, Filtrete 18x18x1 AC Furnace Air Filter, MPR 300,Opens in a new window or tabBrand New$11.99Buy It Now+$17.00 shippingk.d.o.doubleg (597) 98.9%
- 18x18x1 Air Filter, MPR 1200 MERV 11Opens in a new window or tabBrand New$19.90or Best Offer+$6.44 shippingonglo_84 (9) 88.9%
- New Listing18x18x1 Washable Electrostatic Air Filter. Reusable HVAC & Furnace Air FilterOpens in a new window or tabBrand New$89.79Buy It NowFree shippingenjoywithusthank (5,973) 95.2%
- 1" Inch Glasfloss ZL MERV 10 Pleated Air Filters for AC & Furnace. Case of 12Opens in a new window or tab5% Off when you Buy 2 or More Cases of Any Size!Brand New$62.72 to $92.48Buy It NowFree 2-3 day shippingFree returnsSave up to 5% when you buy moreTop Rated Plusfiltersdelivered (20,780) 99.9%
- Filtrete 18x18x1 Air Filter MPR 1200 MERV 11 Allergen Plus Odor Reduction1FilterOpens in a new window or tabBrand New$25.13or Best OfferFree shippingbeibei26026 (66) 100%
- New ListingNordic Pure 18x18x1 MERV 8 Pleated AC Furnace Air Filters 6 PackOpens in a new window or tabBrand New$95.79Buy It NowFree shippingaras-store (3) 0%
- 18 x 18 x 1 Standard Pleated Air Filter FPR 5, 3-Pack, Air Filters ReplacementOpens in a new window or tabBrand New$16.07Buy It NowFree shippingFree returnsarmen7652 (46) 92.6%
- Aerostar 18x18x1 MERV 8 Pleated Air Filter AC Furnace Air Filter 6 PackOpens in a new window or tabOpen Box$24.99or Best Offer+$6.44 shippinginsti_35 (59) 100%
- 18X18X1 In. Allergen Plus Standard Pleated Air Filter FPR 7 MERV 11 Dust HoldingOpens in a new window or tabBrand New$17.32Buy It NowFree shippingFree returnsmatanta_86 (211) 98.6%
- New Listing18 x 18 x 1 Air Filter, Washable & Reusable Aluminum AC/HVAC Furnace Electros...Opens in a new window or tabBrand New$66.47Buy It NowFree shippingordinaryman (67) 97.1%
- FILTRETE 1085 MERV 11 MPR MICRO ALLERGEN FURNACE AIR FILTER 1,2,4 MONTHS SUPPLYOpens in a new window or tabBrand New$23.99 to $55.87Buy It NowFree shippingFree returnsdimdimstore (310) 100%
- 18X18X1 Air Filter Standard Pleated FPR 5 Dust & Pollen High Quality (3-Pack)Opens in a new window or tabBrand New$15.27Buy It NowFree shippingFree returnsAlmost gone19 soldthe.real.deal2016 (92,792) 98.2%
- 18x18x1 in. Standard Pleated Furnace Air Dust Filter Performance FPR 5 Merv 8Opens in a new window or tabBrand New$7.77Buy It NowFree shippingFree returnsestore113 (463) 99.6%
- 18x18x1 Air Filter Glasfloss GDS Series Disposable - Box of 6Opens in a new window or tabBrand New$42.70Buy It NowFree 2-4 day shippingFree returnsTop Rated Plushiteco (4,306) 100%
- US Home Filter SC40-18X18X1-6 18"x18"x1" MERV 8 Pleated Air Filter 6 Per CaseOpens in a new window or tabBrand New$41.67Was: $55.5625% offor Best OfferFree shippingbocollin4 (6,188) 99.9%
- 18x18x1 (17.7 x 17.7) Filtrete Dust Reduction 600 Filter by 3MOpens in a new window or tabBrand New$12.75Buy It NowFree shippingfiltersnowcom (18,179) 99.3%
- 18x18x1 (17.7 x 17.7) Filtrete Dust Reduction 600 Filter by 3M (2-Pack)Opens in a new window or tabBrand New$15.50Buy It NowFree shippingfiltersnowcom (18,179) 99.3%
- 18x18x1 (17_3/4x17_3/4) Pleated MERV 13 Air Filters 2 PackOpens in a new window or tabBrand New$34.99Buy It NowFree shippingFree returnsnordicpureair (16,964) 99.8%
- 18x18x1 (17.75 x 17.75) MERV 11 Air Filters (4-Pack)Opens in a new window or tabBrand New$29.16Buy It NowFree shippingfiltersnowcom (18,179) 99.3%
- 18x18x1 (17_3/4x17_3/4) Pleated MERV 12 Air Filters 6 PackOpens in a new window or tabBrand New$57.99Buy It NowFree shippingFree returnsTop Rated Plusnordicpureair (16,964) 99.8%
- 12 Pack 18" x 18" x 1" Disposable Flat Panel Furnace FiltersOpens in a new window or tabBrand New$46.18Buy It NowFree 2-4 day shippingFree returnsgreatbrands (681,482) 99.3%
- 18x18x1 (17.75 x 17.75) MERV 11 Filter (6 Pack)Opens in a new window or tabBrand New$41.24Buy It NowFree shippingfiltersnowcom (18,179) 99.3%
- (6) Orange/White Polyester Filter Pads 1" Poly MERV8 Tackified - CHOOSE SIZEOpens in a new window or tabBrand New$46.80 to $74.00Buy It NowFree shippinghvac_solutions (29,986) 99.7%
- 18x18x1 MERV 11 Pleated AC Furnace Air Filters. 6 Pack. Made in USAOpens in a new window or tabShips out same or 1 Day. Free 90 Day Return Shipping.Brand New$54.49Buy It NowFree 2-3 day shippingFree returnsSave up to 10% when you buy moreTop Rated Plusfiltersdelivered (20,780) 99.9%
- 1" Inch Depth Glasfloss ZL MERV 10 Pleated Air Filters. 3 PackOpens in a new window or tab20% Off when you Buy 2 or More Packs of Any Size!Brand New$25.98 to $35.59Buy It NowFree 2-3 day shippingFree returnsSave up to 20% when you buy moreTop Rated Plusfiltersdelivered (20,780) 99.9%
- Arm & Hammer Max Allergen Odor Reduction 18x18x1 Air and Furnace Filter, 4 PackOpens in a new window or tabOpen Box$5.00Buy It Now+$19.05 shippingBenefits charityintegritysalestn (1,017) 99.5%
- (12) Green / White MERV 8 Polyester Air Filter Pads CHOOSE SIZEOpens in a new window or tabBrand New$59.88 to $87.88Buy It NowFree shippingairfilterhub (2,677) 100%
- 18x18x1 (17_3/4x17_3/4) Pleated MERV 7 Air Filters 3 PackOpens in a new window or tabBrand New$38.99Buy It NowFree shippingFree returnsnordicpureair (16,964) 99.8%
- Filterbuy 18x18x1 Pleated Air Filters, Replacement for HVAC AC Furnace (MERV 13)Opens in a new window or tabBrand New$34.92 to $172.56Buy It NowFree 2-3 day shippingFree returnsTop Rated Plusfilterbuyinc (11,689) 100%
- 18X18X1 MERV 13 Pleated AC Furnace Air Filters. 6 Pack / $8.99 eachOpens in a new window or tabBrand New$62.72Buy It NowFree 2-3 day shippingFree returns74 soldSave up to 10% when you buy moreTop Rated Plusfiltersdelivered (20,780) 99.9%
- 18x18x1 (17_3/4x17_3/4) Pleated Air Filters MERV 7 Plus Carbon 2 PackOpens in a new window or tabBrand New$37.99Buy It NowFree shippingFree returnsnordicpureair (16,964) 99.8%
- 18X18X1 (17.75 x 17.75) Enviroflow Air Filter (MERV 8) (4 Pack)Opens in a new window or tabBrand New$32.99Buy It NowFree shippingfiltersnowcom (18,179) 99.3%
- AAF Flanders HD Fiberglass Stratadensity 18x18x1 Air Filters 220-643-051 (12ct)Opens in a new window or tabBrand New$42.99Buy It NowFree shippingretroaddicts (125) 100%
- 18x18x1 AC and Furnace Air Filter by Aerostar - MERV 13, Box of 12Opens in a new window or tabBrand New$84.31Was: $99.1915% offBuy It NowFree shippingFree returnsSave up to 5% when you buy moreaerostarfilters (11,619) 99.4%
- Aerostar 18x18x1 MERV 8 Furnace Air Filter, 4 PackOpens in a new window or tabBrand New$33.51Was: $39.4215% offBuy It NowFree shippingFree returnsSave up to 5% when you buy moreaerostarfilters (11,619) 99.4%
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