Any help on the following will be greatly appreciated.
I would like to make a hole roughly six inches diameter or square to accomodate an axial fan vent. The wall is brick with plaster, and is just wider than a brick.
Is there some tool that I can buy that can make a hole of that dimensions? Or is there some other way to go about this? I can make the hole larger, say, up to 12 inches to accomodate a normal fan, but I really cannot go less than six inches because the fan is used to ventilate an attic that becomes suffocating during the summers.