Of course if you have short carpet on your floor the pc may be able to sit on that carpet with plenty of airflow underneath.
Pc with a metal case carpet.
We have fairly high pile carpet and my pc case has a bottom intake for the power supply fan.
If you need a stand only to keep the tower out of the floor with no need to moving it and the tower is protected from accidental even if gentle movement by a kid a pet or the person.
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I previously had a case where the power supply intake would be inside.
The pc tower is on the floor and it will remain on the floor until i can buy a different computer stand having thrown away the money spent for this kantek think.