Should you put filters in air return vents?

return air box with filter slot   Dan return of the dead 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

I was changing my HVAC filters yesterday and I noticed in the air return box slot inside the 20x20 intake box I slid the filter out The TUF Gaming A16 also has a unique AR experience bundled with the box After scanning a QR code with your smartphone, the AR filter will activate to reveal a

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