How is a case like the NZXT Source 210 practical for front fans?

Same answer as above. I have the 210 elite and it has an opening at the bottom of the front panel for fresh air. I'm not certain but I believe one of the source cases has a mesh front (220 maybe) that is if you like the design but worry about air flow (i have no issues with a 4790k cooled by hyper 212 evo and a sapphire 290x inside) Would be a pain to clean though.