The 24X25X24 W4" Filter Rack Return Air Duct Plenum by Tinman is a rectangular-shaped plenum made of galvanized steel. It is designed for both updraft and downdraft installations and is compatible with various HVAC systems such as ducted evaporative coolers, packaged rooftop furnaces, and central air conditioners. This plenum provides a sturdy and reliable solution for filtering and returning air in HVAC systems.
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