AF16x25x4-M8 Merv 8 Air Filter 16x25x4

Product Description

The AF16x25x4-M8 is a MERV 8 pleated air filter designed for whole-house HVAC air handler and furnace applications. With a nominal size of 16x25x4 inches and an actual size of 15.5 x 24.5 x 3.75 inches, this filter fits standard 4-inch filter slots found in residential air handlers, media cabinets, and whole-house filtration systems. MERV 8 filtration captures common airborne particles including dust, pollen, mold spores, and pet dander, making it a practical choice for residential systems where improved air quality and equipment protection are both priorities. This listing includes a pack of 10 filters.

This filter is intended for residential whole-house HVAC systems equipped with a 4-inch media filter cabinet or integrated filter slot. It suits forced-air heating and cooling systems where standard 1-inch filters have been replaced with deeper media filtration for extended service intervals and improved particle capture. MERV 8 is appropriate for most residential applications and is compatible with systems that can accommodate a 3.75-inch actual-depth filter. Installers should verify the cabinet's actual opening dimensions before installation to confirm fit.

Key Features

• MERV 8 rated filtration captures dust, pollen, mold spores, and pet dander
• Nominal size 16x25x4 inches fits standard 4-inch whole-house media filter cabinets
• Actual size 15.5 x 24.5 x 3.75 inches for accurate cabinet fitment planning
• Pleated media construction provides extended filter surface area for longer service life
• Pack of 10 filters supports multiple replacement cycles

Compatibility

Designed as an OEM-style replacement for residential whole-house HVAC systems using a 4-inch media filter cabinet with a 16x25x4 nominal filter opening. Verify actual cabinet dimensions against the 15.5 x 24.5 x 3.75 inch actual size before installation.

Installation Notes

Filter replacement in whole-house media cabinets is typically performed by HVAC technicians or qualified service personnel. Power down the air handler at the disconnect or breaker before opening the filter cabinet. Note the airflow direction arrow printed on the filter frame and orient the filter so airflow moves from the dirty side through the media toward the blower. Replace filters at manufacturer-recommended intervals or when pressure drop across the filter indicates loading.