The Lennox 18G75 return plenum is engineered to provide a sealed and insulated return air transition between the duct system and the HVAC unit. Featuring R8 internal insulation, this plenum helps reduce thermal losses and condensation while improving overall system efficiency. The integrated 1/2" flange allows for easier installation and a secure connection to ductwork or equipment cabinets. Constructed from durable sheet metal, it is ideal for professional HVAC installations where fit, performance, and reliability matter.

 

Specifications:

Brand: Lennox
Catalog Number: 18G75
Type: Return Air Plenum
Insulation Rating: R8
Flange: 1/2" flange
Material: Sheet metal, insulated interior
Application: HVAC return air duct transition
Compatibility: Select Lennox furnaces and air handlers