16x25x1 is one of the most common furnace filter sizes in US homes, and this collection gives you a full range of filtration levels to choose from:
For general dust and allergen control, MERV 8–11 is plenty for most homes. Step up to MERV 13 if you have allergies, pets, or smoke concerns. Replace 1-inch filters about every 3 months.
Not sure which level is right for your system? Call 1-800-277-3458.