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A Complete List of Fireplace Surround Standard Sizes

By Pedro Calcano December 29, 2023 0 comments

A Complete List of Fireplace Surround Standard Sizes

We totally get it – the plethora of available fireplace surround sizes can be downright baffling. We've navigated these murky waters before and found that understanding the standard dimensions of fireplaces is key to finding one that not only elevates the ambiance in your home, but also ensures utmost safety.

In this guide, we'll untangle the complexities of all those measurements so you have a clear idea about what each means - empowering you to find just the right fit for your space. Ready? Let's hop right in!

Key Takeaways

  • Fireplace surrounds come in many sizes and materials. They can be made of wood, brick, concrete, cast iron, stone and even marble.
  • Standard dimensions for fireplaces range between 24 to 36 inches wide and 24 to 29 inches high.
  • Brick fireplace dimensions usually vary with an option for customization based on homeowner's preference.
  • Gas fireplaces are popular due to their efficiency and come in sizes suited for a variety of home designs.
  • Electric fireplaces have standard but varying sizes depending on the model and manufacturer.desired by homeowners.

Understanding Fireplace Surrounds

We dive into the world of fireplace surrounds, exploring their crucial role and the various materials used in their construction.

Role of a Fireplace Surround

A fireplace surround plays a significant role by framing the fireplace and enhancing its aesthetic appeal. It includes elements like the sides, mantel, and sometimes the hearth, adding architectural interest to any room setting.

Safety is another crucial factor that we must consider while planning for a fireplace surround. The surround should ensure appropriate clearances from combustible materials to prevent potential fire hazards.

Finally, the size of your room is an essential factor in deciding on your fireplace surround; it should be proportional so as not to overwhelm or underwhelm your living space.

Materials Used for Fireplace Surrounds

There are numerous options available when it comes to materials used for fireplace surrounds. First, we have wooden surrounds, they are favored for their affordability and ease to install. Next are the concrete surrounds, which can be painted to match any room decor. A brick surround stands as an appealing choice due to its ability to customize fit to each fireplace opening.

Fireplace Surround Standard Sizes

In this section, we'll delve into the standard sizes of various fireplace surrounds. We'll detail the general dimensions for each type of fireplace surround—be it brick, masonry, gas or electric.

This way, you can easily determine which size will suit your space perfectly.

Standard Fireplace Dimensions

Fireplaces come in a variety of standard sizes, which are important to consider when planning your design or installation. Here are some of the most common dimensions:


Average Width

Average Height

Average Depth

General Fireplaces

24 to 36 inches

24 to 29 inches

16 inches

Brick Fireplaces

42 inches



Masonry Fireplaces (Short Walls)

24 to 48 inches

Up to 84 inches


Masonry Fireplaces (Tall Walls)

24 to 48 inches

Up to 84 inches


Gas Fireplaces

24 to 48 inches

24 inches (opening height)

14 inches (firebox height)

Electric Fireplaces

44 inches

31 inches

13 inches

Corner Fireplaces

Up to 54 inches


Up to 41 inches

These measurements are, of course, average figures and individual models may vary. Always measure your space and consult with a professional to ensure the best fit for your room.

Brick Fireplace Dimensions

Brick fireplaces are a classic addition to many homes. Their dimensions vary depending on several factors including the design of the home and the personal taste of the homeowner. The following table provides an overview of the standard dimensions typically found in brick fireplaces.

Fireplace Component

Standard Dimensions

Firebox Width

11 to 19 inches and beyond

Firebox Height

14 inches

Fireplace Depth

Approximately 16 inches

Fireplace Opening Height

24 to 29 inches

Fireplace Opening Width

24 to 36 inches

Surround Width

36 to 48 inches

It's essential to note that these are just average dimensions. One of the great things about choosing a brick fireplace is the flexibility it offers in terms of size, making it easy to find a model that fits your home perfectly.

Masonry Fireplace Dimensions

Masonry fireplaces are known for their impressive size and grandeur. The dimensions can vary greatly depending on the design and the specific needs of the homeowner. Here's a simple chart to give you a basic idea of standard masonry fireplace dimensions.

Masonry Fireplace




Short Wall

24 to 48 inches


Approximately 16 inches

Tall Wall

Up to 84 inches


Approximately 16 inches

These dimensions are a general guide and can be customized according to the available space and the homeowner's preferences. Remember, the primary goal is to achieve a balanced look that complements the rest of your space.

Gas Fireplace Dimensions

Gas fireplaces are immensely popular due to their efficiency and ease of use. They come in different shapes and sizes, catering to a variety of home designs and preferences. Here we've compiled the standard dimensions for various types of gas fireplaces.

Type of Gas Fireplace



Firebox Height

Opening Height

Standard Gas Fireplace

24 to 48 inches


14 inches

24 inches

Gas Fireplace Insert

26 to 32 inches

17 to 24 inches



Corner Gas Fireplace

45.5 inches

40.5 inches



Double-sided Gas Fireplace

44 inches

52 inches



These dimensions can act as a reference when installing or replacing a gas fireplace. However, specific fireplace models may slightly differ, so always consult with the manufacturer or a professional installer for exact measurements.

Electric Fireplace Dimensions

Electric fireplaces are a popular choice due to their ease of use, low maintenance and versatility. They come in various sizes, designed to meet the different needs and preferences of homeowners. Here are some of the standard dimensions for electric fireplaces.

Types of Electric Fireplace

Height (inches)

Width (inches)

Depth (inches)

Standard Electric Fireplace



Approximately 16

Electric Fireplace Designed for Living Room




Fireplace Inserts for Electric Fireplaces (Small)




Fireplace Inserts for Electric Fireplaces (Medium)




Fireplace Inserts for Electric Fireplaces (Large)




Corner Electric Fireplaces

Up to 41

Up to 54


Double-sided Electric Fireplaces




These dimensions are standard but can vary slightly based on the specific model and manufacturer. Always measure the available space at your home before purchasing an electric fireplace.

Fireplace Mantel Dimensions

The dimensions of a fireplace mantel are a vital aspect to consider when planning or designing your home's fireplace. There are standard dimensions that work well for most fireplaces, but these can be adjusted to fit specific needs and styles.


Standard Size

Adjustable Range


One-third of the total width of the fireplace opening

Depends on the size of the fireplace opening



Usually between 36 to 48 inches


6 to 12 inches

Can be adjusted based on specific design preferences and safety guidelines

Remember, these dimensions are general standards, allowing for flexibility to match your specific fireplace and design aesthetic. Always consider the size of your room, the size of your fireplace, and the proportions of the mantel to ensure the overall look is harmonious.

Fireplace Hearth Dimensions

The fireplace hearth is an essential piece of your fireplace as it serves as both a decorative and functional aspect. It protects your floor from sparks, embers, and heat, while also providing an aesthetically pleasing element to your fireplace setup. The standard size for a fireplace hearth is 36 inches wide and 18 inches deep. This must extend a minimum of 16 inches from the opening of the fireplace. For corner fireplaces, they should measure at least 36 inches wide and 18 inches deep.

Hearth Type



Standard Hearth

36 inches

18 inches

Corner Fireplace Hearth

36 inches

18 inches

Note that these are standard sizes and your fireplace hearth size might vary depending on the design and size of your fireplace. Always consult with a professional when planning to install or modify a fireplace to ensure safety and compliance with local building codes.

Fireplace Insert Dimensions

Fireplace inserts come in various sizes to accommodate different styles of fireplaces. Here we are providing information about the standard dimensions for both gas and electric fireplace inserts.

Type of Fireplace Insert

Standard Size

Gas Fireplace Insert (Small)

26x17x14 inches

Gas Fireplace Insert (Medium)

29x20x14 inches

Gas Fireplace Insert (Large)

32x24x16 inches

Electric Fireplace Insert

31x44x13 inches

It's important to keep these measurements in mind while shopping for a fireplace insert. They ensure the insert fits perfectly within your fireplace, maximizing efficiency and safety.

Fireplace Opening Dimensions

Understanding the dimensions of your fireplace opening is essential for deciding on the right surround and ensuring a perfect fit. Here is a handy reference table that details the standard opening sizes for different types of fireplaces:

Type of Fireplace



Firebox Fireplace

11 to 19 inches

14 inches

Standard Fireplace

24 to 36 inches

24 to 29 inches

Masonry Fireplace

24 to 48 inches

As high as 84 inches for taller walls

Gas Fireplace

24 to 48 inches

24 inches

Electric Fireplace

44 inches

31 inches

By referencing this table, you can ensure that your fireplace surround will align perfectly with the existing dimensions of your fireplace opening. We hope this compilation of fireplace opening dimensions aids you in making your fireplace aesthetically pleasing and functionally efficient.

Fireplace Framing Dimensions

When installing a fireplace, accurate framing dimensions are crucial to ensure a safe and secure fit. They can vary significantly depending on the type of fireplace and the specific model you choose. As a guide, we've compiled some general fireplace framing dimensions.

Type of Fireplace

Framing Width

Framing Height

Framing Depth

Wood Burning Fireplace

30 to 48 inches

34 to 44 inches

20 to 24 inches

Gas Fireplace

36 to 44 inches

34 to 40 inches

12 to 16 inches

Electric Fireplace

30 to 44 inches

29 to 31 inches

8 to 13 inches

Please note that these dimensions are averages and can vary based on the specific make and model of your fireplace. Always consult with a professional or refer to your fireplace's specific installation instructions for precise measurements.

Fireplace Raised Hearth Dimensions

In the world of fireplaces, the raised hearth is both a practical and decorative element. It's a platform that extends out in front of the fireplace, elevated slightly off the floor. Its primary purpose is to catch any live embers or sparks that might jump out of the fire, protecting your floor and adding an extra layer of safety. But it also adds architectural interest and provides a cozy spot for sitting near the fire.

Now, let's talk about the standard dimensions. The height of a raised hearth can vary. However, the National Fire Protection Agency (NFPA) recommends a minimum height of 16 inches to ensure safety. As for the depth, it should be at least 20 inches to comfortably catch sparks and provide ample seating area. Although these are standard dimensions, keep in mind that raised hearths can be custom-built to match the specific design and style of your space. So don't be afraid to stray from these measurements if you prefer a different look or need to accommodate specific room dimensions!

How to Measure a Fireplace

Getting the correct dimensions of your fireplace is essential for a proper fit and safe operation. Follow these steps to measure your fireplace thoroughly:

  1. First, ensure you have a tape measure, notepad and pencil ready.
  2. Begin by measuring the width of the firebox, which is the area where the wood burns. This can range from 11 to 19 inches depending on the model.
  3. Measure the height of your firebox next. The standard height is typically 14 inches.
  4. Also measure the depth, or how far back the firebox goes into the wall. On average, this measures approximately 16 inches.
  5. Then turn your attention to the opening of your fireplace. This refers to both its height and width and can vary largely between models.
  6. If it has a surround, measure its size too; it usually extends around 42 inches wide.
  7. For masonry or brick fireplaces specifically, remember dimensions can go up to 84 inches high for homes with taller walls.
  8. Gas fireplaces usually have widths ranging from 24 to 48 inches so be sure to take this into consideration if needed.
  9. Likewise, electric fireplaces for living rooms typically have unique measurements that you should take note of such as a height of 31 inches, a width of 44 inches and depth of 13 inches.


In this section, we answer some of the most commonly asked questions about fireplaces such as what constitutes a standard size fireplace opening, how wide a 42-inch fireplace truly is, whether a fireplace can be too big for a room and more.

We also delve into the specifics of installing and measuring mantels above a fireplace in accordance with safety codes.

What is a standard size fireplace opening?

The dimensions of a standard fireplace opening often differ based on the type and design of the fireplace. Generally, the height of a typical opening ranges from 24 to 29 inches, while its width can be anywhere between 24 to 36 inches.

However, for gas fireplaces, widths typically vary from 24 to 48 inches with an opening height specifically set at around 24 inches. These measurements ensure adequate ventilation and heat distribution throughout your home.

It's crucial for homeowners planning a renovation or installation to become familiar with these sizes so that they can accurately fit their chosen fireplace into their existing structure or plan ahead for new construction.

How wide is a 42-inch fireplace?

A 42-inch fireplace refers to the viewing area or opening width, not the total width of the whole unit. Therefore, it's essential to consider other components like framing and surrounds when calculating precise measures.

The total breadth of a 42-inch fireplace typically falls within the range of 36 to 48 inches when you include these additional elements.

Precise measurements can vary based on specific design factors such as whether your fireplace is freestanding, inserted into a wall or corner unit. Dimensions may also be influenced by materials used for a mantel or surround, such as stone or wood.

A professional in installing fireplaces could provide more accurate dimensions tailored specifically to your setup and preferences.

Can a fireplace be too big for a room?

Indeed, a fireplace can be too large for a room. This usually happens when the fireplace overpowers the space, making it feel cramped and uncomfortable. The sizing of a fireplace should always consider the available room area as well as the type of fireplace being installed.

Fire safety regulations play an essential role here as all fireplaces must maintain at least 12 inches of clearance from any combustible material such as walls or furniture to prevent potential fire hazards.

Thus, choosing a size too big could not only disrupt your room's aesthetic but also pose a significant threat to safety.

What is the code for distance between fireplace and mantel?

The National Fire Protection Association has set some guidelines for safety when it comes to the distance between a fireplace and mantel. They recommend a minimum of 6 inches clearance between the fireplace opening and any combustible material such as wood or plaster used in mantels.

This code is crucial to prevent potential fire hazards, especially when operating an open flame. Keep in mind that this is a recommendation, local building codes may enforce stricter regulations depending on your location.

How high should a mantel be mounted above a fireplace?

Mounting your fireplace mantel at the right height is crucial. If it's too low, you risk potential fire hazards due to proximity to open flames. On the other hand, if it's positioned too high, it may not provide the aesthetic value you desire for your living space.

Safety regulations suggest that the mantel should be a minimum of 12 inches above the top of the fireplace opening. This rule is also reinforced by The National Fire Code which states there should be at least 6 inches clearance from any combustible materials starting from the firebox opening.

Following these guidelines will ensure safety in your home while maintaining an appealing ambiance around your fireplace.


Harnessing the right fireplace dimensions greatly enhances room aesthetics and optimizes heat efficiency. With this comprehensive guide, selecting a fireplace with suitable sizes becomes more manageable.

Ensure you choose wisely to create an inviting, warm atmosphere that adds value to your living space. Happy house warming!


1. What are the standard sizes of a fireplace?

Fireplace sizes vary, with common fireplace dimensions including the width of the fireplace surround, masonry hearth dimensions, and other parts of the chimney structure.

2. How do electric and gas fireplaces differ in sizing?

Electric fireplaces can come in different measurements compared to gas fireplaces as they’re designed differently. For example, a gas fireplace insert might have different size requirements than an electric or wood-burning one.

3. Can you provide me data on specific types of fireplace measurements like corner and double-sided ones?

Corner fireplaces have unique shapes that affect their widths and heights while double-sided ones require particular calculations for efficient operation.

4. Does changing my outdoor or indoor living area setting affect my choice in fireplace size?

Yes, space considerations such as whether your living room accommodates a large brick wall or only allows for an insert wood model will impact your choice when it comes to both indoor and outdoor designs.

5. What materials are usually used for making fireplaces?

Common materials include concrete for durability; metal, plaster or tile for aesthetic appeal;wood is preferred due to its traditional look in styles such as a mantel with shiplap accent walls.

6.What should I consider if adding modern features such as TV above my Fireplace?

You need account factors like mantle height from your heat source to prevent damage along with any building codes set by agencies like National Fire Protection Association (NFPA) before proceeding with installation.


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