Can I place outdoor screen over air vents on top of my amplifier vs. dust/hair entering?

Thanks! I don’t believe the screen has increased the operating temperature of my Gamut D200i.
Just thought it might help as we do get a good amount of dust, etc circulating here in FL, despite religious AC filter changes every 2 months. I realize some dust gets through but some circulating hairs etc do not. I like the fan idea as well.  

All good suggestions. I’m thinking also 100 micron stainless steel fine mesh?