Bambu Lab Exhaust Fan Muffler V3

I liked the previous version, but most people dont have oddly sized magnets on hand.  I created this one that uses two stacked 6x3mm magnets.  Thats 6mm round and 3mm tall, stacked on top of each other.  The hole id 6.5mm round and 6mm deep, it should let them slip in with no issues.