20x25 Return Plenum (C Cabinet) plenum Pair it with a Lennox

Pair it with a Lennox cooling unit for a complete home comfort solution that delivers year-round efficiency and performance

Furnace Model S9X1C100U5PSBA

Quiet Performance: Operates with minimal noise

and more efficient operation

20x25 Return Plenum (C Cabinet) plenum Pair it with a LennoxThis insulated 20x25 return plenum (C Cabinet) is designed to house either a 1" or 4" filter, offering flexibility for standard or high efficiency filtration. Built with durable, galvanized steel and fully lined with insulation, it helps reduce noise and condensation while improving airflow. Compatible with most residential HVAC systems requiring a 20x25 return size, this plenum ensures cleaner, quieter, and more efficient operation.