KNC Titan Fan Size

Just a shot in the dark here, but does anyone happen to know the fan size for the KNC Titans? I had one fail last night, and I'd really like to get a replacement ASAP. I've got a desk fan pushing air through it now, but I've had to underclock it to maintain stability. I've googled it, but that little detail isn't coming up. They look like they're maybe 140mm, but I'm not sure.