Hi im looking for some help regarding opening up an old fireplace the house is around 100years old can anybody tell me aapproximately how wide the opening will be and what is will look like inside?. I have removed the plaster from the wall but it is very difficult to see what is new and what is old I can only see the lintel about 3 foot up wich needs replacing I took a brick out of the back and that goes right back so im fine thereits jist the width. Inside the chimney itself when I look up the chimney it lookd to have been bricked up on both sides about 5 foot up the che chimney goes widet is this something they would of done just to make it smaller or is that normal any help on this woyld be amazing thanks aaron