Making your own grill
for your fans would be a lot easier and cheaper. You could use all
materials that can be found in your home.
Your main component would be your old fan, removed its metal ring
and you can now measure the desired length or size of grid that you will
be needed. Cut the grid across so it will be easier to cut, then place
it in the tower and use the same screw you removed in the fan.
Now you can put the grid holding fan back in its place. Clean up and
you can now use your very own fan grills that cost almost nothing but