The 17-1/2 inch L x 21 inch W x 24 inch H Return Air Box with Filter Rack is an essential component for HVAC systems, designed to improve air quality and system efficiency in residential and commercial settings. This sturdy, galvanized steel air box features a built-in filter rack for easy filter changes, ensuring optimal airflow and filtration. Ideal for homeowners and HVAC professionals, this high-capacity return air box provides a reliable solution for maintaining clean, filtered air, enhancing overall system performance, and reducing maintenance costs in heating and cooling systems.

• 24 Gauge Galvanized Steel
• Filter Size: 16x20x1
• For Use With B Cabinet Air Handlers
• Filter(s) Not Included