Standard Fireplace Size

There are five key dimensions to measure the height and width of the opening the height and width of the back wall of the fireplace and the depth of the fireplace.

Standard fireplace size.

The mantel should not be so wide that it reaches anything else like a wall window or door. For a quick calculation on size make sure that the mantel shelf width divided by 2 is less than the width from the fireplace center to any wall window door or shelf. The fireplace opening is a very important element in fireplace design. The capacity of a chimney to remove smoke and or energy btu s from an appliance is directly related to the cross section area.

A safe route is to make it 12 longer than the fireplace box. A 42 inch fireplace will probably have a mantel width of 54 inches. The configuration and dimensions of most other components of the fireplace and chimney are based primarily on the dimensions of the fireplace opening selected. Fireplaces can range from a small two feet by two feet and smaller up to massive creations that take up an entire room s walls with chimneys spanning two stories.

Fireplace design details do not stop on the front face of the fireplace. Standard hearth pad dimensions vary based on the width of the fireplace. Some make it just larger that the firebox. The shape and size of your fireplace depends on three main factors.

Outdoor fireplaces can be as small as four feet tall three feet wide and two feet deep. Back wall of fireplace must be straight up for first 12 inches. The firebox must be shaped and sized perfectly so it doesn t smoke revised september 2018. While larger fireplaces complete with mantel and hearth built in seating and wood storage boxes can be as large as 15 feet tall 15 feet wide and 4 feet deep.

Also ensure the hearth pad stretches at least 8 inches past the right and left edges of the fireplace. When building standard models make sure hearth pads extend at least 16 inches beyond the fireplace s front edge. 48 72 96 120. Figure 1 shows details and table 1 provides the widths and heights of fireplace.

The size of fireplace insert you require is related to the size of your existing masonry chimney. Sides of firebox must pinch in towards back. This will tell you which of the most common sizes you are looking at buying. Standard hearth pad dimensions apply to fireplaces with openings less than 6 square feet.

The majority of mantels we sell are from 66 78 but we make every mantel custom to your unique space.