Carrier FB4CNF024 air filter size

Filter size13 × 21 1/2 × 1"

The Carrier FB4CNF024 takes a filter that measures 13 × 21 1/2 × 1", a length stores don't stock. We cut it to fit, to within 1/16 inch, in the USA.

Is this your unit?

The model number is on the label on the side of the unit or inside its front panel. It starts with FB4CNF024. This page also covers FB4CNF024L, FB4CNF024L00. The same units are sold as Bryant.

Not sure? Take a photo of the label and we'll read it for you.

If your filter isn't in the unit

Many closets have the filter behind a grille on the door, wall or ceiling instead. That one is sized by the grille, not the unit. The size is printed on the filter's edge, or you can photograph it on our home page.

Size from Carrier's product specifications. If it doesn't fit, our fit guarantee sends a new one free. Caliper isn't affiliated with or endorsed by Carrier.