18x20x1-11

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Aerostar 18x20x1 MERV 11 Furnace Air Filter, 6 Pack
Aerostar 18x20x1 MERV 11 Furnace Air Filter, 6 Pack

$38.41

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Filterbuy 18x20x1 Pleated Air Filters, Replacement for HVAC AC Furnace (MERV 11)
Filterbuy 18x20x1 Pleated Air Filters, Replacement for HVAC AC Furnace (MERV 11)

$163.68

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18x20x1 AC and Furnace Air Filter by Aerostar - MERV 11, Box of 12
18x20x1 AC and Furnace Air Filter by Aerostar - MERV 11, Box of 12

$79.76

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Filtrete 18x20x1 Air Filter MPR 1000 MERV 11, Allergen 4-Pack
Filtrete 18x20x1 Air Filter MPR 1000 MERV 11, Allergen 4-Pack

$39.99

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18x20x1 (17.75 x 19.75) MERV 11 Filter
18x20x1 (17.75 x 19.75) MERV 11 Filter

$29.16

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18x20x1 (17 1/2 x 19 1/2 x 3/4) Tru Mini Pleat 11 AC Furnace Air Filters 3 Pack
18x20x1 (17 1/2 x 19 1/2 x 3/4) Tru Mini Pleat 11 AC Furnace Air Filters 3 Pack

$88.51

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NEW 4 Pack, Aerostar 18x20x1 MERV 11 Furnace Air Filter, 4 Pack
NEW 4 Pack, Aerostar 18x20x1 MERV 11 Furnace Air Filter, 4 Pack

$11.99

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Pamlico 18x20x1 MERV 11 ( FPR 8-9 ) Pleated Air Filters. Case of 12
Pamlico 18x20x1 MERV 11 ( FPR 8-9 ) Pleated Air Filters. Case of 12

$75.97

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Aerostar 18 x 20 x 1 MERV 11 Furnace Air Filter, 6 Pack
Aerostar 18 x 20 x 1 MERV 11 Furnace Air Filter, 6 Pack

$13.49

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Aerostar 18X20X1 MERV 11 AC Furnace Air Filter 6 Pack
Aerostar 18X20X1 MERV 11 AC Furnace Air Filter 6 Pack

$19.99

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Aerostar 18x20x1 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 6 Pack
Aerostar 18x20x1 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 6 Pack

$37.00

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18x20x1 (17 1/2 x 19 1/2 x 3/4) Tru Mini Pleat 11 AC Furnace Air Filters 3 Pack
18x20x1 (17 1/2 x 19 1/2 x 3/4) Tru Mini Pleat 11 AC Furnace Air Filters 3 Pack

$88.51

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18x20x1 (17.75 x 19.75) MERV 11 Filter (6 Pack)
18x20x1 (17.75 x 19.75) MERV 11 Filter (6 Pack)

$41.24

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18x20x1 (Actual Size) Accumulair Platinum 1-Inch Filter (MERV 11) (4 Pack)
18x20x1 (Actual Size) Accumulair Platinum 1-Inch Filter (MERV 11) (4 Pack)

$59.55

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Accumulair Platinum 18x20x1 MERV 11 Air Filters (6 Pack)
Accumulair Platinum 18x20x1 MERV 11 Air Filters (6 Pack)

$91.14

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Accumulair Platinum 18x20x1 MERV 11 Air Filters (6 Pack) FA18X20_6
Accumulair Platinum 18x20x1 MERV 11 Air Filters (6 Pack) FA18X20_6

$91.14

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Flanders NaturalAire 18x20x1 MERV 8 Pack of 11 Pre Pleat Air Filter Furnace HVAC
Flanders NaturalAire 18x20x1 MERV 8 Pack of 11 Pre Pleat Air Filter Furnace HVAC

$14.99

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18x20x1 (17 1/2 x 19 1/2 x 3/4) Tru Mini Pleat MERV 11 AC Furnace Air Filters...
18x20x1 (17 1/2 x 19 1/2 x 3/4) Tru Mini Pleat MERV 11 AC Furnace Air Filters...

$88.51

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Gold 18x20x1 (Actual Size) (MERV 11) 1-Inch Filter (4 Pack)
Gold 18x20x1 (Actual Size) (MERV 11) 1-Inch Filter (4 Pack)

$62.14

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Aerostar 18x20x1 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 6 Pack Size:
Aerostar 18x20x1 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 6 Pack Size:

$59.65

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Simply Filters 18x20x1 MERV 11, MPR 1000, AC Furnace HVAC Air Filter
Simply Filters 18x20x1 MERV 11, MPR 1000, AC Furnace HVAC Air Filter

$29.97

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Filtrete 18x20x1 Air Filter MPR 1000 MERV 11, Allergen 4-Pack,
Filtrete 18x20x1 Air Filter MPR 1000 MERV 11, Allergen 4-Pack,

$65.52

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Aerostar 18x20x1 MERV 11 Furnace Air Filter, 6 Pack
Aerostar 18x20x1 MERV 11 Furnace Air Filter, 6 Pack

$41.95

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Filters Fast 18x20x1 MERV 11 Pleated HVAC AC Furnace Air Filters 6 Pack
Filters Fast 18x20x1 MERV 11 Pleated HVAC AC Furnace Air Filters 6 Pack

$76.99

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Aerostar 18x20x1 MERV 11 Furnace Air Filter, 4 Pack
Aerostar 18x20x1 MERV 11 Furnace Air Filter, 4 Pack

$39.33

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KOCH , AIR FILTER , 102-031-015 , 18 X 20 X 1 , MULTI-PLEAT XL8HC **LOT OF 11**
KOCH , AIR FILTER , 102-031-015 , 18 X 20 X 1 , MULTI-PLEAT XL8HC **LOT OF 11**

$45.00

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18x20x1 MERV 11 HVAC/Furnace pleated air filter (6)
18x20x1 MERV 11 HVAC/Furnace pleated air filter (6)

$78.99

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18x20x1 (17_1/2x19_1/2) Nordic Pure Tru Mini Pleat MERV 11 Air Filters 3 Pack
18x20x1 (17_1/2x19_1/2) Nordic Pure Tru Mini Pleat MERV 11 Air Filters 3 Pack

$67.99

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NEW 6 Pack, Aerostar 18x20x1 MERV 11 Furnace Air Filter, 6 Pack
NEW 6 Pack, Aerostar 18x20x1 MERV 11 Furnace Air Filter, 6 Pack

$19.99

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18x20x1 (17.75 x 19.75) Accumulair Platinum 1-Inch Filter (MERV 11) (4 Pack)
18x20x1 (17.75 x 19.75) Accumulair Platinum 1-Inch Filter (MERV 11) (4 Pack)

$59.55

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18x20x1 AC and Furnace Air Filter by Aerostar - MERV 11, Box of 2
18x20x1 AC and Furnace Air Filter by Aerostar - MERV 11, Box of 2

$30.03

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Filtrete 18x20x1 AC Furnace Air Filter MERV 11 MPR 1000 Micro Allergen Defens...
Filtrete 18x20x1 AC Furnace Air Filter MERV 11 MPR 1000 Micro Allergen Defens...

$69.21

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18x20x1 (17_1/2x19_1/2) Nordic Pure Tru Mini Pleat MERV 11 Air Filters 6 Pack
18x20x1 (17_1/2x19_1/2) Nordic Pure Tru Mini Pleat MERV 11 Air Filters 6 Pack

$108.99

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18x20x1 (17_1/2x19_1/2) Pleated MERV 13 Air Filters 6 Pack
18x20x1 (17_1/2x19_1/2) Pleated MERV 13 Air Filters 6 Pack

$69.99

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18x20x1 MERV 11 Pleated AC Furnace Air Filters. 6 PACK.. Made in USA.
18x20x1 MERV 11 Pleated AC Furnace Air Filters. 6 PACK.. Made in USA.

$57.97

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18x20x1 (17_1/2x19_1/2) Nordic Pure Tru Mini Pleat MERV 11 Air Filters 12 Pack
18x20x1 (17_1/2x19_1/2) Nordic Pure Tru Mini Pleat MERV 11 Air Filters 12 Pack

$194.99

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18X20X1 MERV 11 Pleated Home A/C Furnace Air Filter (12-Pack)
18X20X1 MERV 11 Pleated Home A/C Furnace Air Filter (12-Pack)

$110.04

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AAF Flanders 18"x20"x1" Flat panel EZ 11 12 each
AAF Flanders 18"x20"x1" Flat panel EZ 11 12 each

$19.99

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18x20x1 11 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 17...
18x20x1 11 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 17...

$66.95

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18x20x1 MERV 11 Pleated AC Furnace Filter - Case of 6
18x20x1 MERV 11 Pleated AC Furnace Filter - Case of 6

$54.44

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Aerostar 18x20x1" MERV 11 Pleated AC Furnace Filters Pack 6
Aerostar 18x20x1" MERV 11 Pleated AC Furnace Filters Pack 6

$34.77

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Proairtek AF18201M11SWH MERV11 18x20x1 Air Filter, Residential & Commercial Use
Proairtek AF18201M11SWH MERV11 18x20x1 Air Filter, Residential & Commercial Use

$12.99

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Aerostar 18x20x1 MERV 11 Furnace Air Filter, 6 Pack
Aerostar 18x20x1 MERV 11 Furnace Air Filter, 6 Pack

$30.00

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Aerostar 18x20x1 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 6 Pack
Aerostar 18x20x1 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 6 Pack

$42.99

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Proairtek AF18201M11SWH Model MERV11 18x20x1 Air Filters (Pack of 2)
Proairtek AF18201M11SWH Model MERV11 18x20x1 Air Filters (Pack of 2)

$17.99

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AIR HANDLER Pleated Air Filter: 18x20x1, MERV 11 box of 12
AIR HANDLER Pleated Air Filter: 18x20x1, MERV 11 box of 12

$81.48

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18x20x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-M...
18x20x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-M...

$60.33

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Aerostar 18x20x1 MERV 11 Furnace Air Filter , 2 Pack.
Aerostar 18x20x1 MERV 11 Furnace Air Filter , 2 Pack.

$30.00

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Honeywell 18x20x1 Superior Allergen Air Filter - Box of 12
Honeywell 18x20x1 Superior Allergen Air Filter - Box of 12

$50.00

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BestAir B1-1820-11-6 18" x 20" x 1" Allergens Pleated Furnace Filter - 6 Pack
BestAir B1-1820-11-6 18" x 20" x 1" Allergens Pleated Furnace Filter - 6 Pack

$99.89

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NEW 4-Pack 3M Filtrete 18x20x1 Air Filter, 1000 Mpr, Merv 11
NEW 4-Pack 3M Filtrete 18x20x1 Air Filter, 1000 Mpr, Merv 11

$22.99

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by MervFilters, 18x20x1 MERV 11, MPR 1000 Air Filter (6 Pack) - Actual Size 1...
by MervFilters, 18x20x1 MERV 11, MPR 1000 Air Filter (6 Pack) - Actual Size 1...

$65.94

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18x20x1 AC Furnace Air Filter, 11, MPR 1000, Micro Allergen Defense, 3-Month ...
18x20x1 AC Furnace Air Filter, 11, MPR 1000, Micro Allergen Defense, 3-Month ...

$64.49

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18x20x1 11 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 17...
18x20x1 11 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 17...

$68.16

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Filtrete 18x20x1 Air Filter, MPR 1000, MERV 11, Micro Allergen Defense
Filtrete 18x20x1 Air Filter, MPR 1000, MERV 11, Micro Allergen Defense

$18.00

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TruFilter MERV 11 18x20x1 Air Filters 2-Pack for Superior Allergen Defense
TruFilter MERV 11 18x20x1 Air Filters 2-Pack for Superior Allergen Defense

$59.99

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AIRx Filters Allergy 18x20x1 Air Filter MERV 11 AC Furnace Pleated Air Filter
AIRx Filters Allergy 18x20x1 Air Filter MERV 11 AC Furnace Pleated Air Filter

$69.99

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BestAir B1-1820-11-6 18x20 x 1 In. MERV 11 Furnace Filter, 90 Days - Quantity 6
BestAir B1-1820-11-6 18x20 x 1 In. MERV 11 Furnace Filter, 90 Days - Quantity 6

$75.29

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4-pack 18x20x1 Advanced Air Filter, MPR 1000, MERV 11, Micro Allergen Defense
4-pack 18x20x1 Advanced Air Filter, MPR 1000, MERV 11, Micro Allergen Defense

$69.69

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Proairtek AF18201M11SWH Model MERV11 18x20x1 Air Filters (Pack of 4)
Proairtek AF18201M11SWH Model MERV11 18x20x1 Air Filters (Pack of 4)

$45.88

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Filtrete 18x20x1 AC Furnace Air Filter MPR 1000 Micro Allergen Defense 4-Pac b
Filtrete 18x20x1 AC Furnace Air Filter MPR 1000 Micro Allergen Defense 4-Pac b

$59.01

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Proairtek AF18201M11SWH Model MERV11 18x20x1 Air Filters (Pack of 6)
Proairtek AF18201M11SWH Model MERV11 18x20x1 Air Filters (Pack of 6)

$63.88

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Aerostar 18x20x1 MERV 11 Furnace Air Filter, 6 Pack
Aerostar 18x20x1 MERV 11 Furnace Air Filter, 6 Pack

$35.00

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Air Handler Pleated Air Fiber 18x20x1 MERV 8 6B947. Pack Of 11
Air Handler Pleated Air Fiber 18x20x1 MERV 8 6B947. Pack Of 11

$110.00

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Filtrete 3M 18x20x1 MERV 11 Allergen Plus Odor Reduction HVAC Furnace Air Filter
Filtrete 3M 18x20x1 MERV 11 Allergen Plus Odor Reduction HVAC Furnace Air Filter

$98.88

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Long-lasting High-Performance Air Filter 18x20x1 - MPR 1000 - MERV 11 - 4-Pack
Long-lasting High-Performance Air Filter 18x20x1 - MPR 1000 - MERV 11 - 4-Pack

$69.69

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Filtrete 18x20x1 AC Furnace Air Filter MPR 1000 Micro Allergen Defense 4-Pac d
Filtrete 18x20x1 AC Furnace Air Filter MPR 1000 Micro Allergen Defense 4-Pac d

$61.04

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18x20x1 (17_1/2x19_1/2) Pleated MERV 7 Air Filters 12 Pack
18x20x1 (17_1/2x19_1/2) Pleated MERV 7 Air Filters 12 Pack

$94.99

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18" x 20" x 1" Standard Capacity MERV 11 Self-Supported Multi-Pleat Air Filter
18" x 20" x 1" Standard Capacity MERV 11 Self-Supported Multi-Pleat Air Filter

$150.00

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Trane FLRSF1185 18x20x1 Air Filters (17.75x19.75x.75 Actual Size) Case of (12)
Trane FLRSF1185 18x20x1 Air Filters (17.75x19.75x.75 Actual Size) Case of (12)

$132.00

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18x20x1 Pleated Air Filter 6 Pack - Electrostatic MERV 11 Filter for Allergies
18x20x1 Pleated Air Filter 6 Pack - Electrostatic MERV 11 Filter for Allergies

$93.08

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Electrostatic MERV 11 Air Filters 18x20x1 - Dust and Allergy Protection 2-Pack
Electrostatic MERV 11 Air Filters 18x20x1 - Dust and Allergy Protection 2-Pack

$74.04

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Filtrete 18X20X1 Air Filter MPR 1000 MERV 11, Allergen 4-Pack,
Filtrete 18X20X1 Air Filter MPR 1000 MERV 11, Allergen 4-Pack,

$65.99

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Premium Pleated Air Filter Set - 4 MERV 11 Filters for HVAC Systems (18x20x1)
Premium Pleated Air Filter Set - 4 MERV 11 Filters for HVAC Systems (18x20x1)

$77.30

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Filtrete 18x20x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen 1-Inch
Filtrete 18x20x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen 1-Inch

$55.61

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Nordic Pure 18x20x1 (17 1/2 x 19 1/2 x 3/4) Pleated MERV 8 Air Filters 6 Pack
Nordic Pure 18x20x1 (17 1/2 x 19 1/2 x 3/4) Pleated MERV 8 Air Filters 6 Pack

$38.00

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Aerostar Merv 11 Pleated Air Filters 18x20x1 Box Of 6. R6
Aerostar Merv 11 Pleated Air Filters 18x20x1 Box Of 6. R6

$25.95

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Simply by MervFilters, 18x20x1 MERV 11, MPR 1000 Air Filter 6 Pack - Actual Size
Simply by MervFilters, 18x20x1 MERV 11, MPR 1000 Air Filter 6 Pack - Actual Size

$56.75

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18x20x1 Air Filters, Replacement AC Furnace Air Filters, 4 Count. Pleated.
18x20x1 Air Filters, Replacement AC Furnace Air Filters, 4 Count. Pleated.

$60.99

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1 PACK or 4 PACK- Air Filter Allergen Plus Pleated FPR 7 Dust Filters Furnace AC
1 PACK or 4 PACK- Air Filter Allergen Plus Pleated FPR 7 Dust Filters Furnace AC

$18.77

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Filtrete 18x20x1 AC Furnace Air Filter MERV 11 MPR 1000 Micro Allergen Defens...
Filtrete 18x20x1 AC Furnace Air Filter MERV 11 MPR 1000 Micro Allergen Defens...

$59.97

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Aerostar18x20x1 MERV11 Pleated Air Filter AC Furnace Air Filter 6 Pack Fresh Air
Aerostar18x20x1 MERV11 Pleated Air Filter AC Furnace Air Filter 6 Pack Fresh Air

$65.98

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Aerostar 16 3/8 x 21 1/2 x 1 MERV 11 Pleated Assorted Styles , Pattern Names
Aerostar 16 3/8 x 21 1/2 x 1 MERV 11 Pleated Assorted Styles , Pattern Names

$50.56

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3M 18x20x1, Red, Micro Filtrete Filter, MPR 1000, 1 Pack
3M 18x20x1, Red, Micro Filtrete Filter, MPR 1000, 1 Pack

$35.00

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1085 3M Filtrete-Extra Air-Filter HVAC Furnace Smog Smoke Pollen Dust Allergen
1085 3M Filtrete-Extra Air-Filter HVAC Furnace Smog Smoke Pollen Dust Allergen

$23.77

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3M FILTRETE 18x30x1 MPR 1200 MERV 11 ALLERGEN DEFENSE AIR FILTER 3 PACK
3M FILTRETE 18x30x1 MPR 1200 MERV 11 ALLERGEN DEFENSE AIR FILTER 3 PACK

$67.99

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Filtrete 18x20x1 AC Furnace Air Filter MPR 1000 Micro Allergen Defense 4-Pack...
Filtrete 18x20x1 AC Furnace Air Filter MPR 1000 Micro Allergen Defense 4-Pack...

$79.99

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AIRx Filters Allergy 18x20x1 Air Filter MERV 11 AC Furnace Pleated Air Filter
AIRx Filters Allergy 18x20x1 Air Filter MERV 11 AC Furnace Pleated Air Filter

$90.69

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Aerostar 18x20x1 MERV 11 Pleated Air Filter AC Furnace Air Filter 6 Pack Family
Aerostar 18x20x1 MERV 11 Pleated Air Filter AC Furnace Air Filter 6 Pack Family

$82.48

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3M 1085 Filtrete Micro Allergen Extra Air Filter 18” x 20” x 1" - 3 Packs.
3M 1085 Filtrete Micro Allergen Extra Air Filter 18” x 20” x 1" - 3 Packs.

$34.98

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16x25x1 AC Furnace Filter, MERV 11, MPR 1000, Micro Allergen Defense, 4-Pack
16x25x1 AC Furnace Filter, MERV 11, MPR 1000, Micro Allergen Defense, 4-Pack

$68.89

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Filtrete 18x20x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Def...
Filtrete 18x20x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Def...

$94.99

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3M Filtrete Air Filter MPR 1000/1085 Reduce Dust Pollen Pet Dander Mold Allergen
3M Filtrete Air Filter MPR 1000/1085 Reduce Dust Pollen Pet Dander Mold Allergen

$109.99

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High-Efficiency Pleated Air Filters - 4 Pack, MERV 11 for Ultimate Filtration
High-Efficiency Pleated Air Filters - 4 Pack, MERV 11 for Ultimate Filtration

$77.99

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AIRx Filters Allergy MERV 11 AC Furnace Pleated Air Filter Replacement Box of 6
AIRx Filters Allergy MERV 11 AC Furnace Pleated Air Filter Replacement Box of 6

$69.99

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AIRx Filters Allergy MERV 11 AC Furnace Pleated Air Filter Replacement Box of...
AIRx Filters Allergy MERV 11 AC Furnace Pleated Air Filter Replacement Box of...

$90.30

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Filtrete18x20x1 Air Filter MPR1200 MERV 11Allergen Plus Odor Reduction 4 Filters
Filtrete18x20x1 Air Filter MPR1200 MERV 11Allergen Plus Odor Reduction 4 Filters

$98.88

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Filtrete 18x20x1 AC Furnace Air Filter MPR 1000 Micro Allergen Defense 4-Pac A
Filtrete 18x20x1 AC Furnace Air Filter MPR 1000 Micro Allergen Defense 4-Pac A

$59.00

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