FAMCO Furnace Filter Rack

support* the box may be providing to the air handler itself I don't know what's inside the box to hold up the air handler, or

38 x 28 x 15-38, Hot Dip Galvanized Steel, Return Air, Sheet Metal Duct Support Box 5908000 16 X 25 1 FILTER HOLDER · 5908000 16

return air support box with filter slot Return Air Support Box w Filter Rack Description: Support Box w Filter Rack; Size: 40 x 28 x 15; Gauge: 26; Duct Size: 10 x 25; Order #: M90-482

return of kong megaways slot support* the box may be providing to the air handler itself I don't know what's inside the box to hold up the air handler, or