Hi,i have a CM elite310 case.
I have cutout a hole at the bottom for a bottom intake fan and added 1.5 inch bushes to elevate the case.
i currently have a 120mm CM silent pro fan with a claimed CFM of 43 there with mascool air filter to keep the dust out.
the fan is on the outside,hence there is approx 10mm of clearance between the table top and the fan and the fan doesnt seem to move in any amount of air(a piece of paper barely moves when kept on top of it).
Moreover i have the exact same fan as a front top intake with the same air filter and it moves a quite a lot of air.
so i am assuming that moving air upwards with a small clearance requires a better fan,and this is where i need your help.
Photo of how my bottom fan is set up to make it more clear.
I need a fan that can move a large amount of air inspite of the 10mm clearance and the air filters.
i had my eyes on these
I live in india hence i dont have a lot of options when it comes to case fans.
these are the top sites dealing in computer HW in my country.
http://www.theitwares.com/cooling-devices-case-fans-c-101_49_85.html
i would like to keep the cost around or below $15.














.