Each furnace or air conditioning unit may require a unique filter size. At RemembertheFilter.com, you’ll find the largest selection of filter sizes anywhere online. Our 12x30x1 air filter collection features popular brands such as AAF Flanders and Naturalaire. You’ll also find filters with various MERV ratings, so you can choose the right one for your home or business. Our filters also come in cost-effective bulk packs—this is a smart way to save money and keep backup filters in stock at all times. Browse our 12x30x1 air filters now and order high-quality filters for your furnace or air conditioner.
- Standard Sizes
- 8x14x1
- 8x16x1
- 8x20x1
- 8x24x1
- 8x30x1
- 8x36x1
- 10x10x1
- 10x16x1
- 10x20x1
- 10x24x1
- 10x25x1
- 10x30x1
- 11-1/2x11-1/2x1
- 12x12x1
- 12x15x1
- 12x16x1
- 12x20x1
- 12x24x1
- 12x25x1
- 12x30x1
- 12x30-5/8x1
- 12x36x1
- 14x14x1
- 14x18x1
- 14x20x1
- 14x24x1
- 14x25x1
- 14x30x1
- 15x16x1
- 15x19x1
- 15x20x1
- 15x24x1
- 15x25x1
- 15x30x1
- 15x30-5/8x1
- 15x35x1
- 16x16x1
- 16x18x1
- 16x20x1
- 16x22-1/4x1
- 16x24x1
- 16x25x1
- 16x30x1
- 16x32x1
- 17x17x1
- 17-1/2x17-1/2x1
- 17x19x1
- 17-1/2x19-1/2x1
- 17x21x1
- 17-1/2x23-1/2x1
- 18x18x1
- 18x20x1
- 18-1/2x22x1
- 18x24x1
- 18x25x1
- 18x30x1
- 18x36x1
- 19x21x1
- 19x22x1
- 19x27x1
- 19-1/2x19-1/2x1
- 19-1/2x21x1
- 19-1/2x21-1/2x1
- 19-1/2x23-1/2x1
- 19-7/8x21-1/2x1
- 20x20x1
- 20x22x1
- 20x22-1/4x1
- 20x24x1
- 20x25x1
- 20x30x1
- 20x36x1
- 21x21x1
- 22x22x1
- 23x23x1
- 23-1/2x23-1/2x1
- 24x24x1
- 24x30x1
- 24x36x1
- 25x25x1
- 10x10x2
- 10x20x2
- 12x24x2
- 14x20x2
- 14x25x2
- 15x20x2
- 16x16x2
- 16x20x2
- 16x24x2
- 16x25x2
- 18x20x2
- 18x24x2
- 18x25x2
- 20x20x2
- 20x24x2
- 20x25x2
- 24x24x2
- 25x25x2
- 12x24x4
- 16x20x4
- 16x25x4
- 18x24x4
- 20x20x4
- 20x24x4
- 20x25x4
- 24x24x4
- 25x29x4
- 12-1/2x20x4-1/2
- 16x25x4-1/2
- 20x20x4-1/2
- 20x25x4-1/2
- 20x25x5
- Custom/Odd Size
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