Aaf/flanders 10055.011236 Furnace Filter 12x36x1 Merv 4

Product Description

The AAF/FLANDERS 10055.011236 is a flat-panel spun fiberglass disposable furnace filter sized 12 inches by 36 inches by 1 inch. Rated up to MERV 4, it captures common airborne particles including dust and lint, providing basic mechanical filtration for residential forced-air systems. The filter is sold in a case of 12 units. Designed for straightforward serviceability, it ships without metal media retainers, keeping the disposal process clean and simple. Recommended replacement interval is 30 days, making it well suited for high-use systems or applications where frequent filter changes are standard maintenance practice.

This filter is intended for residential furnaces and air handlers that accept a 12-inch by 36-inch by 1-inch flat-panel filter. It is a fit for light-duty filtration applications where the priority is maintaining airflow with minimal static pressure restriction rather than capturing fine particulates. HVAC technicians and facility maintenance staff commonly use fiberglass panel filters like this in equipment rooms, rental properties, and light commercial settings where bulk replacement stock is practical. The 12-pack case quantity supports scheduled maintenance programs.

Key Features

• MERV 4 rating — effective against dust and lint
• Spun fiberglass flat-panel construction for low static pressure drop
• Disposable design with no metal media retainers for easy removal and disposal
• 30-day recommended replacement interval
• 12-inch by 36-inch by 1-inch nominal size
• Sold as a case of 12 filters

Compatibility

Designed as an OEM-style replacement flat-panel furnace filter for residential and light commercial forced-air systems accepting a 12 x 36 x 1 inch filter slot.

Installation Notes

Installation should be performed by a qualified HVAC technician or trained maintenance professional. Always shut down the furnace or air handler at the disconnect or thermostat before opening the filter compartment. Confirm airflow direction arrow on the filter frame aligns with the direction of airflow toward the blower before seating the filter. Follow local mechanical codes and the equipment manufacturer's service guidelines for filter maintenance intervals.