How to Make a FILTER RACK in a Plenum or Duct so that

Purchase a Furnace Return Air Box return air support box with filter slot Install the filter media box between the return air plenum and the air handler box 2 Slide the filter into the slot and place the filter return air box with filter slot If you need a return air box with a filter rack, we can help you there, too Southern Pipe and Supply has the size and style of HVAC return air box that you

return air support box with filter slot HVAC Plenum & Filter Boxes · 20 X 20 X 30 WFilter Rack Return Air Duct Plenum-26 Gauge, HVAC Duct Work · 90 Degree Elbow 20 x 20