Question NZXT aer fans 120mm rattling sound?

[uran6800]

Hello
Last week i bought a NZXT H400 case so only one of the pre-installed fans in the front is making a rratling sound on the startup when its on low RPM after a minute it stops and gets back to normal again. Can someone maybe help me or schould i consider to return it back?
Thnks

 

[Dark Lord of Tech]

See if NZXT will send a replacement , Corsair sent me a new one a few years ago.