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18x - 19x Inch Air FIlters

18 inch furnace air filter 18 - 19 Inch High Air Filters

18x_x_  inch and 19x_x_ air filters in various widths.


Save with our Filter 6-packs. Most filters are bundled into 6-packs so the price you see is the price for all 6.
These filters have actual height measurements between 17.5"-18.75" on the smaller side. We also have 18 and 19 inch square filters and other filter sizes.

Most replacement air filters are 1" deep, but we also offer air filters that are 2" deep, 4" deep for residential units and up to 5" or 6" thick for commercial a/c and furnace units.

Actual side dimension of a 18" filter is usually 17 5/8" or so, but they are referred to as 18" filters.

19 inch air fillter furnaceSame goes for the 19" filters regarding the difference between stated size (nominal) as marked on the side of the filter and the actual filter dimension which is less.

Find the 18"x or 19"x  filter size stamped on the side of your old filter cartridge or measure the length and width of your existing filter.

Many of the 18" and 19" filters offered in this section have SAME DAY SHIPPING if ordered before 1:00 p.m EST with free FedEx ground shipping.

Most Popular and Best Selling 18" and 19" home air furnace filters and air conditioner filters

18x18x1 18x20x1 18x34x1
18x30x1 19x21x1 19x22x1