Have been trying to find replacement louvers for our attic fan-the fan is fine but the louvers(not on the outside of the house but the louver vent coming in the house that's mounted on the ceiling)are old and need replacing. ********** has no idea what we mean when we try and explain what we need, maybe a plumbing supply store???? Any thoughts would be appreciated.

attic fan louvers

Attic Fan Louvres gable end vertical