Desk filter help

[Boybeauty]

my desk has a built in fan and I've thrown the filter/pad out that sits on top of the fan and below the grid does anybody know where to buy them from

 

[cheekychick]

my desk has a built in fan and I've thrown the filter/pad out that sits on top of the fan and below the grid does anybody know where to buy them from

Who is your desk made by? Maybe contact them and see if you can purchase a replacement