Al Smith
Mac Daddy
If you want or need to run screens ,so be it .You don't want the rest of Cali to go up in smoke . If you increase the hole size with screen you could get the same effect as removing the screen if this would be permisable as per forestry dept specs . You can buy that screening through Mc Master -Carr . I don't think a 12 by 12 square is too much and it would make a bunch of screens .