25x25x1 MERV 14 Air Filter
The Ironside 25x25x1 MERV 14 pleated air filter delivers maximum protection for your home or office — engineered to keep your HVAC system running clean and your air clear.
- Captures smoke, bacteria, virus carriers, and wildfire particulates
- True 25x25x1 fit — sized to drop straight into standard HVAC and furnace systems
- Electrostatically charged, moisture-resistant pleated media
- Made in the USA
- Replace every 30–90 days for best airflow and efficiency
Built here. Breathe better.
Specs
| Nominal size | 25x25x1 |
| Actual size | 24.5 × 24.5 × 0.75 in (approx.) |
| MERV rating | 14 |
| Filter type | Pleated |
| Media | Electrostatic synthetic |
| Replace | Every 90 days |
| Made in | USA, by our manufacturing partners |
All 25x25x1 filters → · Which MERV do I need?
Product FAQ
Will a 25x25x1 filter fit my system?
If your slot or old filter says 25x25x1, yes — nominal sizes are standardized. Actual size runs about half an inch under nominal so it slides in without jamming.
What does MERV 14 capture?
MERV 14 captures fine particles including smoke, bacteria-sized particles and the dust that reaches deep into lungs — the right choice for allergies, asthma and wildfire season.
How many packs should I buy?
Shipping is flat-rate and stays the same on 1, 2 or 3 packs — so a year's supply in one order is the cheapest way to buy. Four filters covers a year at the 90-day schedule.
Is this filter made in the USA?
Yes — American-made by our manufacturing partners with electrostatic synthetic media in heavy-duty frames. Built here. Breathe better.