dust filter but not fan

[bjlockie]

I have an In Win 301case with no fans except the CPU fan and the PS fan.
The temps seem fine for what I need and I'd rather it be quiet.
There is a honeycomb open area at the back of the case for a fan.
What do you think about a magnetic fan filter for that area (no fan though)?
I want to keep as much dust out as possible.
How much of an impact will that have on temperatures?

 

[UsandThem]

How much of an impact will that have on temperatures?

Each case and other factors are different. Try taping it off with some duck tape (or a piece of paper), and see what it does to your temps to find out for sure.

 

[aigomorla]

the rear is usually used as an exhaust in the case.

very rarely do people or case manufactors make the rear an intake.
Filters are generally good for intakes, not exhausts, as you dont want to filter what goes out of the PC but in, unless u want your PC to collect dust.