1 Inch Furnace Filters
1 inch air filters available in standard,hard-to-find and custom sizes for furnace and AC.
- Available in Standard and Custom Sizes
- Superior Quality, Best Prices Guaranteed
- High Filtration Efficiency, Move To MERV 13
- Improve Your Home's Air Quality By Upgrading Your MERV Rating
- Changing Your Filters Keeps Energy Costs Down By Up To 15%
Choose a Size Below
- 5.88x12.13x1
- 6.88x15.88x1
- 6x12.25x1
- 7.75x25.75x1
- 8x14x1
- 8x16x1
- 8x19.5x1
- 8x20x1
- 8x24x1
- 8x30x1
- 8x35.5x1
- 8x8x1
- 9.75x23.75x1
- 9x11.75x1
- 10x10x1
- 10x14x1
- 10x15x1
- 10x16x1
- 10x18x1
- 10x20x1
- 10x24x1
- 10x25x1
- 10x28x1
- 10x30x1
- 10x36x1
- 11.25x11.25x1
- 11.25x19.25x1
- 11.25x23.25x1
- 11.5x11.5x1
- 11.5x21x1
- 11.75x11.75x1
- 11.75x13.5x1
- 11.88x16.88x1
- 12.13x19.5x1
- 15.25x15.25x1
- 15.5x29x1
- 15x15x1
- 15x20x1
- 15x25x1
- 15x30.5x1
- 15x30.75x1
- 15x30x1
- 16.25x21.25x1
- 16.25x21.5x1
- 16.25x21x1
- 16.38x21.38x1
- 16.38x21.5x1
- 16.5x21x1
- 16.5x22x1
- 16x16x1
- 16x18x1
- 16x19x1
- 16x20x1
- 16x21.5x1
- 16x21x1
- 16x22.25x1
- 16x22x1
- 16x24x1
- 16x25x1
- 16x27x1
- 16x30x1
- 16x32x1
- 16x36x1
- 17.25x17.25x1
- 17.25x19.25x1
- 17.25x23.25x1
- 17.25x26x1
- 17.25x29.25x1
- 17.25x35.25x1
- 17.5x22x1
- 17.5x23.5x1
- 17.5x27x1
- 17x17x1
- 17x19x1
- 17x20x1
- 17x21x1
- 17x22x1
- 17x25x1
- 18.25x22x1
- 18x18x1
- 18x20x1
- 18x22x1
- 18x24x1
- 18x25x1
- 18x27x1
- 18x30x1
- 18x36x1
- 19.25x21.25x1
- 19.25x23.25x1
- 19.5x19.5x1
- 19.5x21x1
- 19.5x22x1
- 19.5x23.5x1
- 19.75x19.75x1
- 19.75x21.5x1
- 19.75x21x1
- 19.75x22x1
- 19.75x23.75x1
- 19.88x21.5x1
- 19x19x1
- 19x20x1
- 19x21.5x1
- 19x21x1
- 19x22x1
- 19x23x1
- 19x25x1
- 19x27x1
- 20.75x20.75x1
- 20.75x21.75x1
- 20x20x1
- 20x21.5x1
- 20x21x1
- 20x22.25x1
- 20x22x1
- 20x23x1
- 20x24x1
- 20x25x1
- 20x27x1
- 20x30x1
- 20x32x1
- 20x34x1
- 20x36x1
- 20x40x1
- 21.25x21.25x1
- 21.5x23.25x1
- 21.5x23x1
- 21.5x24x1
- 21.5x26x1
- 21.75x21.75x1
- 21x21x1
- 21x22x1
- 21x23.25x1
- 21x23x1
- 22.25x25x1
- 22x22x1
- 22x23.5x1