C Cabinet Return Plenum – Air Handler (20x20x4)

This 20" x 20" x 4" return plenum is designed for use with C-cabinet air handlers. Constructed from durable galvanized steel, it provides a secure connection between the return air duct system and the air handler while accommodating a standard 20x20x4 air filter. Commonly used in residential HVAC installations, this return plenum helps support proper airflow and filtration, improving system performance and indoor air quality. Ideal for new construction, equipment replacements, and retrofit applications. Features: Designed for C-cabinet air handlers Accommodates standard 20x20x4 air filters Durable galvanized steel construction Supports proper return airflow and filtration Helps improve indoor air quality Suitable for residential HVAC applications Ideal for new installations and replacement projects Item# 8096941; Part# MMPDFP2020R6