Mantle Selection Guidelines

Choosing the Right Mantel Size for Your Home

Selecting the right mantel is about choosing proportions that look balanced in your space. Use this guide to select the ideal beam height and depth for your ceiling height.

Ceiling Height

Standard Look

Width–Height and Depth

Bold Look

Width–Height and Depth

Description

8 ft

3.5 W – 4.5″ H
6–7″ D

5 W– 6″ H
7–8″ D

Slimmer beam for lower ceilings

9 ft

4.5 W – 5.5″ H
7–8″ D

6 W–7″ H
8–9″ D

Balanced, classic mantel size

10 ft

5.5 W – 6.5″ H
8–9″ D

7 W–8″ H
9–10″ D

Adds presence without feeling heavy

11–12 ft

6 W – 7.5″ H
9–10″ D

8 W –9″ H
10–11″ D

Substantial beam for taller rooms

13–15 ft

7.5 W – 9″ H
10–12″ D

9 W–10+” H
11–12+” D

Bold, architectural scale

General Sizing Tips

  • Most mantels fall between 6–12″ deep.
  • Mounting height typically ranges from 52–62″ depending on ceiling height.
  • Make mantel height greater than half of its depth dimension for proper proportions.

Safety Reminder

  • Wood mantels must meet minimum clearance requirements above the firebox.
  • Larger or deeper mantels may require additional vertical spacing.
  • Always confirm clearances with your contractor, fireplace manufacturer and local code.

Mantel Length Considerations

  • Mantel length should typically be at least 6–12″ wider than the firebox opening.
  • For a surround, mantels often extend 3–6″ past each side for balanced framing.
  • In larger rooms, extending the mantel wider can visually anchor the fireplace wall.

Need Help Choosing?

Bring in a photo and measurements of your room – we’ll discuss the ideal mantel size for your space.  Or tape parchment paper on your wall to help visualize various mantle sizes.