16 in. x 25 in. Dual Filter Plenum Kit

The Master Flow 16 in. x 25 in. Dual Filter Plenum Kit is an air return plenum exclusively for horizontal HVAC unit applications. It allows the user to install a 1 in. filter or a 4 in. filter (filters not included). The kit is shipped knocked down. Assembly is required for installation. The removal of a partial cover allows the plenum to fit over air system.