Nothing has quite the same impact in a room as a real fire. Choosing the right grate is important both practically and aesthetically.
The starting point is the size of the fireplace opening. Measure this and make sure that your grate will have good clearance at the back (a minimum of 10cm, ideally more) and at least 5 to 10cm at the sides (again ideally more). You don’t want the grate to look undersized in the fireplace, but air flow is important and it’s better to allow plenty of space around the grate. Allowing the air to circulate will encourage warm air into the room where you want it. A grate should suit its surroundings both in style and proportions