Aaf/flanders 84858.012121 Pleated Air Filter 21x21x1 Merv 8

Product Description

The AAF/FLANDERS 84858.012121 is a MERV 8 pleated air filter designed for residential and light commercial HVAC systems. Measuring 21 inches x 21 inches x 1 inch, it uses 100% synthetic wire-backed media to maintain its shape under airflow and capture a broad range of airborne particles. The clay-coated frame adds rigidity and resists moisture-related warping. Rated for a 90-day service interval under normal operating conditions, this filter balances airflow efficiency with effective particulate capture. Each order includes 12 filters sold as a single unit of measure.

This filter is suited for forced-air heating and cooling systems in residential homes, apartment buildings, and light commercial spaces where routine filter maintenance is part of a preventive service schedule. It is commonly installed in return-air grilles, air handler filter racks, and furnace filter slots that accept a standard 1-inch filter. HVAC technicians and property maintenance professionals typically stock this size in bulk to support multi-unit service routes.

Key Features

• MERV 8 rated — captures pollen, dust, lint, dust mites, pet dander, mold spores, bacteria, and virus carriers
• 100% synthetic wire-backed media maintains pleat integrity and consistent airflow resistance
• Clay-coated frame resists moisture and maintains dimensional stability during the service life
• 21 x 21 x 1 inch nominal size fits standard residential and light commercial filter slots
• 90-day recommended replacement interval under typical residential use
• Sold in a case of 12 filters for efficient bulk stocking

Compatibility

Designed as an OEM-style replacement for residential and light commercial forced-air HVAC systems requiring a standard 1-inch pleated filter in a 21 x 21 inch nominal size.

Installation Notes

Installation is performed by HVAC technicians or qualified maintenance personnel. Always shut down the air handler or furnace at the disconnect or thermostat before replacing the filter. Confirm airflow direction arrow on the filter frame aligns with the direction of airflow toward the blower. Inspect the filter rack and surrounding cabinet for gaps or bypass paths and seal as needed to ensure all return air passes through the filter media.

Technical Specifications

• Filter Dimensions: 21 x 21 x 1 inches
• MERV Rating: 8
• Media Type: 100% Synthetic Wire-Backed
• Frame Material: Clay-Coated Cardboard
• Recommended Replacement Interval: 90 days
• Package Quantity: 12 filters per case
• Package Weight: 11.4 pounds

Standard Information

• Brand: AAF/FLANDERS
• Manufacturer Part Number: 84858.012121