Aaf/flanders 10055.011818 Furnace Filter 18x18x1 Merv 4

Product Description

The AAF/FLANDERS 10055.011818 is a flat-panel spun fiberglass disposable furnace filter rated up to MERV 4. Sized at 18 inches x 18 inches x 1 inch, it installs in residential and light-commercial forced-air systems as a standard 30-day replacement filter. The spun fiberglass media captures airborne dust and lint, protecting blower components and heat exchangers from gross particulate buildup. No metal media retainers are used in the construction, keeping the filter lightweight and easy to handle. This SKU ships as a case of 12 filters, making it a practical stocking option for contractors and service companies maintaining multiple units.

This filter is suited for residential gas furnaces, heat pumps, and air handlers that accept a 1-inch flat-panel filter in an 18 x 18-inch nominal slot. Its 30-day service interval makes it appropriate for high-traffic or dusty environments where frequent changeouts are expected. HVAC technicians and property maintenance professionals commonly stock this size in quantity to support scheduled filter replacement programs on apartment complexes, small commercial buildings, and single-family homes.

Key Features

• MERV 4 rating — captures dust, lint, and large airborne particulates
• Spun fiberglass flat-panel construction for lightweight, tool-free installation
• No metal media retainers, simplifying disposal
• Nominal size: 18 inches x 18 inches x 1 inch
• Recommended replacement interval: 30 days
• Sold as a case of 12 filters per unit of measure

Compatibility

Designed as an OEM-style replacement flat-panel filter for residential and light-commercial forced-air furnaces and air handlers accepting a nominal 18 x 18 x 1-inch filter slot.

Installation Notes

Set the system thermostat to off and shut down the air handler or furnace before replacing the filter. Confirm airflow direction markings on the filter frame align with the system airflow arrow before seating the panel. A 30-day inspection interval is recommended, particularly in environments with elevated dust or pet dander. Dispose of used fiberglass filters in accordance with local waste guidelines.

Technical Specifications

• Nominal Size: 18 inches x 18 inches x 1 inch
• Filter Media: Spun Fiberglass
• MERV Rating: 4
• Filter Style: Flat Panel
• Metal Media Retainers: None
• Recommended Service Interval: 30 days
• Package Quantity: 12 filters per case
• Package Weight: 4.6 pounds

Standard Information

• Brand: AAF/FLANDERS
• Manufacturer Part Number: 10055.011818