16x25x4 MERV 8 Pleated Filter
This is a standard 4-inch HVAC furnace/air handler filter used in residential and light commercial systems.
What it is
A deep-pleat disposable air filter:
- Size: 16" x 25" x 4" (nominal)
- Efficiency: MERV 8
- Type: pleated HVAC media filter
- Installed in a 4-inch filter cabinet or media rack
What it does
- Filters air entering your HVAC system
- Captures common airborne particles:
- Dust and dirt
- Pollen
- Pet dander
- Mold spores
- Lint and larger airborne debris
- Helps protect blower motors, coils, and ductwork
Key features
- MERV 8 = basic-to-medium filtration level
- Pleated design = more surface area than 1-inch filters
- 4-inch depth = higher dust capacity and longer life
- Typical replacement interval: 3–6 months (sometimes longer depending on dust/pets)
Why the 4-inch version matters
Compared to a 1-inch filter:
- Much longer service life
- Lower airflow restriction at the same MERV rating
- Better protection for HVAC equipment due to higher dust-holding capacity
Common applications
- Residential HVAC systems with media filter cabinets
- Furnace / air handler return air setups
- Homes with pets or moderate dust levels
- Light commercial buildings
