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Home > Furnace & A/C Filters > 1-inch Thickness Filters
 
1-inch Thickness Filters
All 1" Sizes In-Stock at the LOWEST Prices
Our nationally known, unique "BEST" filters are listed in numerical order... Select your size to learn more
  • Patented allergen reduction filters
  • Highest industry airflow saves energy usage
  • 100% Recycled Paperboard
 
 Products (Total Items: 153)
FD08X14A 08x14x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $13.49  Add To Cart  
FD08X16 08x16x1 (7.5 x 15.5) MERV 13 Furnace/AC/Air Filters - Most Effective $13.49  Add To Cart  
FD08X20A 08x20x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $13.49  Add To Cart  
FD08X24A 08x24x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $13.49  Add To Cart  
FD08X30 08x30x1 (7.5 x 29.5) MERV 13 Furnace/AC/Air Filters - Most Effective $13.49  Add To Cart  
FD09.75X23.75A 09.75x23.75x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $13.49  Add To Cart  
FD10X10 10x10x1 (9.5 x 9.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD10X14A 10x14x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD10X15 10x15x1 (9.5 x 14.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD10X16 10x16x1 (9.5 x 15.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD10X18A 10x18x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD10X20 10x20x1 (9.5 x 19.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $12.59  Add To Cart  
FD10X24 10x24x1 (9.5 x 23.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD10X25 10x25x1 (9.5 x 24.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD10X30N 10x30x1 (9.75 x 29.75) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD11.25X11.25A 11.25x11.25x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD11.25X19.25A 11.25x19.25x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD11.25X23.25A 11.25x23.25x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD11.5X21A 11.5X21x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD12.5X21A 12.5x21x1 (Actual Size)MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD12.75X21A 12.75x21x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD12X12 12x12x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD12X16 12x16x1 (11.5 x 15.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD12X18(A) 12x18x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD12X20(N) 12x20x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $12.59  Add To Cart  
FD12X22A 12x22x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD12X24 12x24x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $12.59  Add To Cart  
FD12X26.5A 12x26.5x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD12X27(A) 12x27x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD12X30(A) 12x30x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD12X36(A) 12x36x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD13.25X13.25A 13.25x13.25x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD13X18A 13x18x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD13X20A 13x20x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD13X21.5A 13x21.5x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) Add To Cart  
FD13X21A 13x21x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD13X24A 13x24x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD14.5X19A 14.5x19x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD14X14 14x14x1 (13.5 x 13.5) MERV 13 Furnace/AC/Air Filters - Most Effective $12.59  Add To Cart  
FD14X18(A) 14x18x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD14X20 14x20x1 (13.5 x 19.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) Add To Cart  
FD14X22A 14x22x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD14X24 14x24x1 (13.5 x 23.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $12.59  Add To Cart  
14X25X1 MERV13 BEST 14x25x1 (13.5 x 24.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) Add To Cart  
FD14X27A 14x27x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD14X28A 14x28x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD14X30 14x30x1 (13.5 x 29.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD14X36(A) 14x36x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $15.89  Add To Cart  
FD15.875X23.875CUSTOM 15 7/8x23 7/8x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $16.99  Add To Cart  
FD15.25X15.25A 15.25x15.25x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD15X15A 15x15x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD15X20 15x20x1 (14.5 x 19.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $12.59  Add To Cart  
FD15X25 15x25x1 (14.5 x 24.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD15X30.75A 15x30.75x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD15X30 15x30x1 (14.5 x 29.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD16.25X21.25A 16.25x21.25x1 (Actual Size MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD16.25X21A 16.25x21x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD16.38X21.38A 16.38x21.38x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD16.5X21A 16.5x21x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD16.5X22A 16.5x22x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
16x16x1 MERV13 BEST 16x16x1 MERV 13 Furnace/AC/Air Filters - Most Effective Allergen Reduction Filter (Best) Add To Cart  
FD16X18A 16x18x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
CFD16X19A 16x19x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $17.79  Add To Cart  
FD16X20 16x20x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.29  Add To Cart  
FD16X21.5A 16x21.5x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD16X21A 16x21x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD16X22.25A 16x22.25x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD16X22A 16x22x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD16X23A 16x23x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $24.99  Add To Cart  
FD16X24 16x24x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $12.59  Add To Cart  
16x25x1 MERV13 BEST-2 16x25x1 MERV 13 Air Conditioner Air Filter - Allergy & Dust Filter (Best) Add To Cart  
16x25x1 MERV13 BEST 16x25x1 MERV 13 Furnace/AC/Air Filter - Allergy & Dust Filter (Best) Add To Cart  
16x25x1MERV1312pack 16x25x1 MERV 13 Furnace/AC/Air Filters -12-Pack - Allergy & Dust Filter (Best) Add To Cart  
MERV13-16x25x1 16x25x1 MERV-13 Furnace/AC/Air Filters - 6-Pack - Allergy & Dust Filter (Best) Add To Cart  
FD16X30 16x30x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD16X32N 16x32x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD16X36(A) 16x36x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $16.19  Add To Cart  
FD17.25X17.25A 17.25x17.25x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD17.25X19.25A 17.25x19.25x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD17.25X26A 17.25x26x1 (Actual Size) Allergen Reduction Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD17.25X29.25A 17.25x29.25x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD17.25X35.25A 17.25x35.25x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $13.49  Add To Cart  
FD17.5X23.5N 17.5x23.5x1 (17.1 x 23.1) MERV 13 Furnace/AC/Air Filters - Most Effective $12.59  Add To Cart  
FD17.5X27A 17.5x27x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $13.49  Add To Cart  
FD17X17A 17x17x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD17X19A 17x19x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD17X20 17x20x1 (16.5 x 19.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD17X21A 17x21x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD17X22 17x22x1 (16.5 x 21.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD17X25(A) 17x25x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD18.25X22A 18.25x22x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $14.39  Add To Cart  
FD18X18(A) 18x18x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $12.59  Add To Cart  
FD18X20(A) 18x20x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD18X22 18x22x1 (17.5 x 21.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD18X24 18x24x1 (17.5 x 23.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $12.59  Add To Cart  
FD18X25 18x25x1 (17.5 x 24.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD18X30 18x30x1 (17.5 x 29.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $15.49  Add To Cart  
FD18X36(A) 18x36x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $16.99  Add To Cart  
FD19.25X21.25A 19.25x21.25x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $14.39  Add To Cart  
FD19.25X23.25A 19.25x23.25x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $14.39  Add To Cart  
FD19.5X21A 19.5x21x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $14.39  Add To Cart  
FD19.5X22A 19.5x22x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $14.39  Add To Cart  
FD19.75X21A 19.75x21x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $14.39  Add To Cart  
FD19.75X22A 19.75x22x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $14.39  Add To Cart  
FD19.88X21.5A 19.88x21.5x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $14.39  Add To Cart  
FD19X19A 19x19x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD19X21(A) 19x21x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD19X22A 19x22x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD19X23A 19x23x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD19X27A 19x27x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD20X20 20x20x1 (19.5 x 19.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $12.79  Add To Cart  
FD20X21.5A 20x21.5x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.59  Add To Cart  
FD20X21A 20x21x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $15.19  Add To Cart  
FD20X22.25A 20x22.25x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $14.39  Add To Cart  
FD20X22(A) 20x22x1 MERV-13 Furnace/AC/Air Filters - Most Effective (Best) $15.19  Add To Cart  
FD20X23A 20x23x1 MERV 13 Furnace/AC/Air Filter - Allergy & Dust Filter (Best) $14.39  Add To Cart  
FD20X24 20x24x1 (19.5 x 23.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $12.59  Add To Cart  
20x25x1 MERV13 BEST 20x25x1 MERV 13 Furnace/AC Air Filter - Most Effective Allergen Reduction Filter Add To Cart  
FD20X27A 20x27x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD20X30 20x30x1 (19.5 x 29.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.29  Add To Cart  
FD20X32A 20x32x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $16.99  Add To Cart  
FD20X36(A) 20x36x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $16.99  Add To Cart  
FD21.25X21.25A 21.25x21.25x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD21.5X23.25A 21.5x23.25x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD21.5X24A 21.5x24x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $14.39  Add To Cart  
FD21.5X26A 21.5x26x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $14.39  Add To Cart  
FD21X21A 21x21x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD21X22(A) 21x22x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $15.49  Add To Cart  
FD21X23.25A 21x23.25x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $14.39  Add To Cart  
FD21X23A 21x23x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD22.25X25A 22.25x25x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $14.39  Add To Cart  
FD22X22(A) 22x22x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $13.49  Add To Cart  
FD22X24(A) 22x24x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD22X26A 22x26x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD22X28A 22x28x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD23.25X29.25A 23.25x29.25x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $14.39  Add To Cart  
FD23.5X23.5N 23.5x23.5x1 (23.1 x 23.1) MERV 13 Furnace/AC/Air Filters - Most Effective $13.49  Add To Cart  
FD23.5X25A 23.5x25x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $14.39  Add To Cart  
FD23X25A 23x25x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD24X24 24x24x1 MERV 13 Furnace/AC/Air Allergen Filters - Most Effective (Best) $15.29  Add To Cart  
FD24X25A 24x25x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD24X28A 24x28x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $14.39  Add To Cart  
FD24X30 24x30x1 MERV 13 Furnace/AC/Air Filter - Allergy & Dust Filter -Best $15.99  Add To Cart  
FD24X36 24x36x1 (23.5 x 35.5) MERV 13 Furnace/AC/Air Filters - Most Effective $17.99  Add To Cart  
FD25X25(N) 25x25x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $15.29  Add To Cart  
FD25X29 25x29x1 (24.5 x 28.5) MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $15.29  Add To Cart  
FD25X32(A) 25x32x1 MERV 13 Furnace/AC/Air Filters - Most Effective (Best) $18.99  Add To Cart  
FD27X27 27x27x1 (26.5 x 26.5) MERV 13 Furnace/AC/Air Filters - Most Effective $16.19  Add To Cart  
FD28X30 28x30x1 (27.5 x 29.5) MERV 13 Furnace/AC/Air Filters - Most Effective $16.19  Add To Cart  
CFD28X30A 28x30x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective (COPY) $28.79  Add To Cart  
FD29X29 29x29x1 (28.5 x 28.5) MERV 13 Furnace/AC/Air Filters - Most Effective $16.19  Add To Cart  
FD30X30 30x30x1 (29.5 x 29.5) MERV 13 Furnace/AC/Air Filters - Most Effective $17.99  Add To Cart  
FD30X36A 30x36x1 (Actual Size) MERV 13 Furnace/AC/Air Filters - Most Effective $20.69  Add To Cart  
 
 

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