BUILT HERE. BREATHE BETTER.

Find Your Filter.

Check the size printed on the cardboard edge of your old filter, then match it below.

Width

Length

Depth

Not sure of your size? Most homes use 16x25x1 or 20x25x1.

OR SHOP BY PROTECTION

Everyday DefenseMERV 6–8 · dust, lint, pollen Allergy & PetMERV 10–12 · dander, mold, allergens Maximum ProtectionMERV 13–16 · smoke, bacteria, wildfire Odor & SmokeActivated carbon · cooking, pets, VOCs

16x25x5 Air Filters

Quick answer: 16x25x5 is the nominal size for 5-inch media cabinets; it's the media size for 16x25 filter cabinets — including Honeywell F100F1025 (our "H" line), Trion Air Bear Cub ("AB") and Lennox X6672 ("LXRED") cabinets. Every filter below is American-made deep-pleat media — match the letter code to your cabinet and pick your MERV rating.

Which line fits your cabinet?

H = Honeywell F100/F150 cabinets · AB = Trion Air Bear · LXRED = Lennox X-series · no letter = generic 5-inch slots. Not sure? Our brand guides map the common part numbers, or read the 1-inch vs deep-pleat guide.

16x25x5 FAQ

What is a 16x25x5 air filter?

16x25x5 is nominal media-cabinet sizing. Actual depth runs about 4⅜ inches depending on the cabinet line — that's normal. It's the media size for 16x25 filter cabinets — including Honeywell F100F1025 (our "H" line), Trion Air Bear Cub ("AB") and Lennox X6672 ("LXRED") cabinets. One media filter replaces a year of monthly 1-inch changes.

Which 16x25x5 line fits my cabinet?

Match the letter to your cabinet: "H" fits Honeywell F100/F150 media cabinets, "AB" fits Trion Air Bear, "LXRED" fits Lennox X-series. The plain 16x25x5 fits generic 5-inch slots. Check the part number on your cabinet door.

How often do I change a 16x25x5 media filter?

Every 6–12 months. Deep pleats hold far more dust than a 1-inch filter, which is why one order of a 2- or 4-pack covers years — and shipping costs the same on 1, 2 or 3 packs.

Ironside 16x25x5 media filters are made in the USA by our manufacturing partners. Replace every 6–12 months. Flat-rate shipping stays the same on 1, 2 or 3 packs — stock two years of clean air in one order. Built here. Breathe better.