Common Filter Sizes

1 INCH THICK

10x10x1, 10x20x1, 10x24x1, 12x12x1, 12x16x1, 12x18x1, 12x20x1, 12x24x1, 12x30x1, 14x14x1, 14x16x1, 14x18x1, 14x20x1, 14x24x1, 14x25x1, 14x30x1, 15x20x1, 16x16x1, 16x20x1, 16x21x1, 16x22x1, 16x24x1, 16x25x1, 16x30x1, 17x22x1, 18x18x1, 18x20x1, 18x22x1, 18x24x1, 18x25x1, 18x30x1, 20x20x1, 20x21x1, 20x22x1, 20x24x1, 20x25x1, 20x30x1, 21x21x1, 21x23x1, 22x22x1, 24x24x1, 24x30x1, 25x25x1

2 INCH THICK

10x20x2, 12x20x2, 12x24x2, 12x25x2, 14x20x2, 14x25x2, 15x20x2, 16x16x2, 16x20x2, 16x24x2, 16x25x2, 16x30x2, 18x18x2, 18x20x2, 18x24x2, 18x25x2, 20x20x2, 20x24x2, 20x25x2, 20x30x2, 24x24x2, 25x25x2

4 INCH THICK

12x12x4, 12x24x4, 14x14x4, 14x20x4, 14x24x4, 14x25x4, 16x20x4, 16x25x4, 17x27x4, 18x24x4, 20x20x4, 20x24x4, 20x25x4, 21x26x4, 24x24x4, 20x30x4

5 INCH THICK

16x20x5, 16x25x5, 16x26x5, 20x20x5, 20x22x5, 20x25x5, 20X26X5, 24x25x5

6 INCH THICK

12x24x6, 16x20x6, 16x25x6, 16x27x6, 17x28x6, 18x24x6, 20x20x6, 20x24x6, 20x25x6, 24x24x6

GEOTHERMAL FILTER SIZES

24x28x2, 28x30x2, 30x32x2, 30x36x2