Armstrong Furnace R06131B046 Filter 16.5 X 25 X 1/2"

The Armstrong Furnace R06131B046 Filter 16.5" x 25" x 1/2" is applied in the HVAC systems to trap dust, lint, and debris that are present in the air flowing through the return duct or air handler. It has a media panel that is sized to occupy predetermined openings, which creates a resistance surface that traps contaminants but lets the air pass through. It keeps the internal components clean and the passage ways of the air cleaner. This is used to maintain higher indoor air quality and also to maintain a steady airflow and system operation in furnaces.