Where is location of fresh air intake in fireplace?

The fresh air intake on a fireplace is usually located on the outside of the house. It is a vent or opening that allows fresh air to enter the fireplace and circulate around the fire. This helps to keep the fire burning efficiently and prevents smoke from entering the room. The fresh air intake is typically located near the bottom of the fireplace, close to the floor. It may be covered by a grate or louvered screen to prevent debris from entering the fireplace.