150mm vent cover ducting mouth?

made bigger and cut in half to allow printing on a v3, remix from another air vent but won't let me tag the other one ??

added some more , check that there not floating above the bed before printing ,

i made it shorter , then added a flap for a one way anti back draught type thing ,, i may try to put a spring on the two flaps rot hold them closed when fan is off ?


any comments welcomed, job offers?? I'm new so be gentle lol