Dust filters question

[Pijmzhchus]

I have Phanteks P400S case with 2 140mm NF-P14S REDUX-900 intakes and one 120mm rear exhaust.
My question is, do I need fan filters on the 2 intakes in the front? The case itself has 2 fan filters in the front where the air is flowing... Are these filters enough or will I benefit from fan filters? Pc will be on a table. Thank you for you help

 

[Zerk2012]

The stock filters should work.