Cross posting this as they were two different discussions and it might get missed if somebody is trying to get a PA120.1 to fit on the lower intake of a Cosmos S....
Coolermaster Cosmos S
It will fit, you just need to pull out a dremmel. (A drill would work as well, but I didin't trust myself not to drill all the way through... :) ).
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Gigabyte P35-DQ6 / E8400 / 2X2 Gig Mushkin PC2 8500 Ascents / Corsair TX750W PSU / Gigabyte 8800GTS / CoolerMaster Cosmos S / MCP655 WC Pump / MCR320 Rad / 6X Yate Loons / PA120.1 / 2X Scythe Ultra Kaze / Swiftech Apogee GTZ WB / Samsung 2253BW
ASUS P5Q Pro / Q6600 / 2X2 Gig Mushkin PC2 8500 Ascents / PC P&C 750W Silencer / Sapphire HD 3450 / HT Omega Striker 7.1 / MCR220-QP-Res / DD DDCPX-Pro / Apogee GT / Swiftech MCW30 / Highspeed PC Tech Station / Samsung 931BF