Filter King AF30x30x4-M8 Merv 8 Air Filter 30x30x4

Product Description

The FILTER KING AF30x30x4-M8 is a MERV 8 pleated air filter designed for residential and light commercial HVAC systems. With a nominal size of 30x30x4 inches and an actual size of 29.5 x 29.5 x 3.75 inches, this 4-inch-depth filter fits standard filter slots calling for a 30x30x4 nominal frame. MERV 8 filtration captures a broad range of airborne particulates including dust, pollen, mold spores, and lint, making it a solid baseline filter for most forced-air systems. Sold in a pack of 10 units, this filter is suited for periodic replacement programs in residential or light commercial maintenance schedules.

This filter is appropriate for use in residential split systems, heat pumps, gas furnaces, and air handlers that accept a 4-inch-depth filter in a 30x30 nominal slot. The 4-inch depth allows for extended service intervals compared to 1-inch filters, reducing the frequency of change-outs in occupied buildings. MERV 8 performance is well-suited for standard indoor air quality requirements where higher-resistance MERV 11 or MERV 13 ratings are not required by design specifications.

Key Features

• MERV 8 rated pleated media captures dust, pollen, mold spores, and lint
• 4-inch depth supports longer service intervals versus 1-inch or 2-inch filters
• Nominal size 30x30x4 inches fits standard residential and light commercial filter tracks
• Actual size 29.5 x 29.5 x 3.75 inches for precise slot fit
• Pack of 10 filters supports bulk replacement or multi-unit service routes

Compatibility

Designed for forced-air HVAC systems requiring a 30x30x4 nominal filter size with a 4-inch-depth filter track. Verify the actual slot dimension against the 29.5 x 29.5 x 3.75 inch actual size before installation.

Installation Notes

A qualified HVAC technician or trained maintenance professional should install this filter with the system powered down. Confirm airflow direction arrows on the filter frame align with the direction of airflow through the system before seating the filter. Inspect the filter rack gasket or seal for gaps that could allow bypass air. Follow local codes and the equipment manufacturer's recommended filter replacement intervals.