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Zero Clearance Fireplace

Thinline ZC Fireplace DoorHaving a zero clearance fireplace is one of the most desirable and attractive elements of any home. You can enhance the usefulness and beauty of your fireplace while also improving its efficiency and safety features with the installation of a high-quality zero clearance or prefab fireplace door. At Fireplace Doors Online, we offer a large variety of easy-to-install and affordable zero clearance fireplace doors that can be custom manufactured in a wide range of styles. 

So if you have a factory-built fireplace at your home, you should definitely get a prefab fireplace door. These fireplace doors are specifically designed to fit fireplaces made in a factory and will simply not work on traditional masonry fireplaces. This is because the venting, mounting, and safety systems used in these doors are particularly created for use in zero clearance wood burning fireplaces. Installing them in traditional fireplaces can damage their functionality and can result in a safety hazard as well.

It is important to note that some of the fireplace doors that we offer are compatible with both masonry and zero clearance fireplaces. However, it is always best to know what kind of fireplace you have, rather than directly looking at and purchasing universal fireplace doors. The difference between wood burning zero clearance fireplaces and zero clearance gas fireplaces is just the fuel source, they both utilize the same types of prefab fireplace doors. 

What is a Zero Clearance Fireplace?

Zero clearance fireplaces are self-constrained and factory built fireplaces that do not require any clearance or buffer zone between combustible materials like wood framing and the firebox. These fireplaces are highly efficient and are among the most affordable options due to low installation and maintenance costs. All in all, zero-clearance fireplaces are low maintenance and easy-to-operate appliances. 

If you have these cozy and warm fireplaces installed at your home, you can upgrade it with one of our custom-designed prefab doors. All our prefab doors are after-market fireplace doors. They fit almost every factory-built fireplace on the market, so you can be sure that our glass fireplace doors will even work on your fireplace. Additionally, they are designed with enough air space, making your zero clearance firebox safe to use — closing off these gaps may cause overheating of the firebox and potentially start a fire. 

It is VERY IMPORTANT to have the correct fireplace doors on any type of fireplace so that your home is not just up to code but, most importantly, safe! As we mentioned above, the wrong fireplace door can cause a fire hazard and may allow dangerous fumes to enter your home. You can check out our Learning Center article on correctly measuring a prefab fireplace door!

Not sure about your fireplace? Take a look at our handy guide, and feel free to ask the experts so that you can learn more about your fireplace and fireplace door! Remember, when it comes to buying a fireplace door, the proverb “measure twice, cut once” applies. So always double-check all measurements and details before finalizing your purchase to ensure that you are ordering the right product. And, if it seems like a little too much of a hassle or if you just are not sure which one to buy, you will surely love our Snapshot Quote feature!

Zero Clearance Fireplace Design

Prefab Firebox DisplayA zero clearance or prefab fireplace is one of the most trendy fireplaces anyone can have for heating their home.  Sometimes they are also referred to as factory built fireplaces. These are specially designed for houses without chimneys and do not require a hearth to operate effectively. These prefab fireplaces need very little maintenance. Furthermore, they can be easily mounted with instructions to install the units and manuals for framework specifications. They look fantastic when a masonry framework surrounds the metal unit. 

These types of fireplaces usually have an air ventilation pipe at the back and are enclosed with a wooden frame. Typically, they are made of cast iron or sheet metal and are fuelled with gas, wood, or electricity. If you use them, you can clean them once a year. Prefab fireplaces can be safely mounted against or near combustible materials, such as walls or woods. The room they need is also relatively smaller than that of traditional fireplaces. 

You can install prefabricated fireplaces in any room of your house to give it a modern yet traditional look. You do not have to cover them with complex or difficult brick work, as you can just get a glass door to give them a striking look. This also helps in reducing the overall cost. There are a variety of attractive designs for these types of fireplaces, and you can also pair them with an attractive mantle that complements your home color schemes. 

Zero Clearance fireplaces are gaining a great deal of popularity because they are cheaper to install and faster and easier to operate than the conventional masonry ones. If you plan to buy one of these, make sure you take proper measurements of the place where you want to get it mounted.  

If you want to give your home a classic traditional look, you should go for a zero clearance wood burning fireplace. These have a metal rim and are fuelled by wood. They not only heat up your place but also reduce energy costs compared to electricity or gas-fueled ones. You will appreciate the comfort of a wooden fireplace in a commercially made zero-clearance fireplace with your family over a hot cup of coffee.

Prefab Fireplace Doors

This beautiful modern fireplace door is an inside fit and ideal for anyone who wants an understated fireplace door.Our prefab fireplace doors add decorative flair to every room. The several styling and finishing options available complement every home setting, whether it’s modern, classic, rustic, or trendy. However, these fireplace doors are not solely for aesthetics. They improve your home’s energy efficiency and bring an additional degree of safety to the raging fire. This means you will get a more comfortable home climate, more peace of mind, and lower fuel costs all year round. 

It is easy to install, and a win-win, as long as you choose and place an order for the right fireplace door. The most important aspect of our ZC fireplace doors is that they pass the strict quality standards required by the factory, making them safe for your home for years to come. That level of attention and quality does not stop indoors.

All of our outdoor ZC fireplace doors are highly durable and weather resistant. Thanks to the robust building materials used, these outdoor glass fireplace doors are designed to withstand harsh weather conditions. Many of our outdoor fireplace doors (including outdoor accessories) are made of stainless steel or other metals, which are known to outlast other metals of poorer quality.

We stand behind our fireplace doors and are confident that they will last for several years. In fact, we even offer a lifetime warranty on the glass that comes with your prefab fireplace door!

What are the Benefits of a Fireplace Door?

Many homeowners may question why they even need a fireplace door. After all, you know not to get too close to the fire when it is crackling in the fireplace. The same cannot be said for pets or kids though, so it is essential to consider the safety of your loved ones when you have a fireplace! There are a lot of benefits to customizing the look of your fireplace with a quality fireplace door, and we have listed just a few of them below:

  • Energy Efficient: Your fireplace door will help regulate the temperature in your home by preventing cooler air in the summer (or warmer air in the winter) from escaping through the fireplace.
  • Odor Control: Get rid of that fireplace smell! Even with a chimney cap, smells can develop from built-up soot and moisture.
  • Fit into Small Spaces: Since no buffer zone is needed or required to place one of these prefab fireplaces, they can easily fit into smaller spaces. 
  • Reduced Installation Costs: As there is no masonry work required to protect combustible materials from heat generated by the fireplace's roaring fires, the cost of installation can be significantly reduced.
  • Appearance: Without a zero-clearance fireplace door, your fireplace is just a hole in the wall, which takes away from the ambiance of the room instead of adding to it.

Benefits of a Fireplace Door



Custom Options

Your home is as unique as you are, so we know how important it is that you have complete control over your home improvements.

With us, you have direct control over the customizations that are applied to your manufactured fireplace door so that you can make the best choices for your fireplace home décor. Many of our fireplaces with zero clearance refacing showcase elegant and visually appealing scrollwork that builds-in into the overall design and framework. A refacing will create an entirely new look for your old, tired-looking factory-built fireplace.

Our prefab fireplace doors have the same level of attention to detail and quality as the fireplace refacing we have for sale. Although installation is not the same, it is still easy for a DIYer to tackle in an afternoon! Getting your fireplace looking spectacular again is as easy as one-two-done!

Custom Colors

Every custom fireplace door has a variety of different finish options. Each manufacturer has their own line of finishes so if you notice different glass fireplace doors offering different finishes, that is likely the reason. Finish options are also dependent on the fireplace door material. There are typically standard and premium finish options although some of the more budget-friendly prefab doors only offer standard powder coat finishes. It is important to understand that the same exact finish color will appear slightly different depending on what the base material is. For example, finishes applied to aluminum frame fireplace doors are considerably lighter than if that same finish was applied to a steel frame fireplace door.

Prefab Fireplace Door Color Samples


The large majority of prefab fireplace doors are made from extruded aluminum, but it is still important to double check before ordering finish samples. When you purchase a sample pack you get to pick 3 different finish colors, this will allow you to compare them in real life to see how they contrast with your current decor. Some premium doors offer hand-applied finishes which are also available online. Fireplace Doors Online offers a $25 discount code on your next order if you send your samples back to us!

Replacement Doors by Manufacturer

While we do create our own high-quality fireplace doors, we are also connected with other suppliers. By collaborating with some well-known companies, we offer box-to-bracket installation - we have everything you need! The whole setup comes with your purchase so no additional purchases are necessary. With these products, you are good to go as soon as you receive your purchase. We carry the complete fireplace door set up for the following suppliers:

In addition to carrying replacement doors for the major manufacturers mentioned above, we also work with fireplace door manufacturers that specialize in custom made fireplace doors and accessories. We are proud to say that all of our manufacturing partners are based in the United States and none of our fireplace doors or fabrication is outsourced! See the list below:

Learn how to measure your fireplace with this informational video!


The Carolina arch conversion fireplace door is perfect if you want an arched fireplace, but you don’t want to spend $5,000+ for a contractor!

Q: Why do you not offer a mesh curtain with your fireplace doors?

Q: Why can't I use ceramic glass doors on my factory-built fireplace?

  • A: Using your fireplace with the fireplace doors closed causes overheating. Pre-fab fireboxes tend to be thinner steel and without the airflow that open fireplace doors allow, it can become a fire hazard. Using your fireplace doors improperly can create a dangerous and costly situation for your home.

Q: Which fireplace door is right for my prefabricated fireplace?

  • A: Let us answer this question with a question: are you sure that you have a manufactured fireplace? An easy way to tell is history; if your fireplace was produced in a factory, it’s a pre-fab fireplace, sometimes referred to as a zero clearance fireplace. If not, you should check out our masonry fireplace doors!

  • A: Once you know that your fireplace is a manufactured unit, look for the metal stamp, plate, or marking indicating the manufacturer's information (such as Heatilator, Majestic, Superior, Marco, Sears, etc.). You should find the tag with the name of your unit either behind the screen or inside above the refractory panel, either on the left or right side. You will be looking for a black metal tag with stamped names and numbers on it.

Q: Can you replace the glass doors on a fireplace?

  • A: You most certainly can replace your glass doors! Once you determine what type of fireplace you have either masonry or prefab, take your measurements, and shop for the door that fits your design. Then you can purchase your doors and install them!

Q: What is a zero clearance fireplace door?

  • A: Zero clearance is another word for a pre-manufactured (prefab) door. If you have a prefab fireplace, you will need this type of door if you are looking to replace the provided doors. The prefab doors are made to be more efficient with heating and can assist with lessening your heat waste. Therefore, you will need to always make sure you are getting the correct type of glass door.

Q: What does OEM mean?

  • A: OEM is an acronym for Original Equipment Manufacturer. Any OEM part is associated only with a specific manufacturer and cannot be used interchangeably with another fabricator's products. Keep scrolling to read more about OEM fireplace doors!

Q: Where on the website can I find OEM fireplace doors?

  • A: Unfortunately, we don’t sell OEM fireplace doors for a few reasons.

    • First, we cannot offer you the same great free shipping with OEM fireplace doors as we can with the rest of our products. The special packaging that OEM doors require doesn’t qualify.

    • Customers generally want the entire replacement fireplace door and with OEM doors, you don’t really get that. Most of our customers are interested in the entire door because theirs has been damaged or is outdated. So, everything from the glass to the mounting hardware needs to be included.

    • Companies change designs and finishes over the years—sometimes even annually! When customers want to replace the original fireplace door, this can be a problem because the company may no longer carry that product as it was originally. Because of that, we offer complete fireplace enclosures with matching door and mainframe finishes.

Interested in browsing by company rather than fireplace door style?

Click on any of the manufacturers below to see the list of complete aftermarket replacement fireplace door enclosures that we offer:

FMI  |  Heat-N-Glo  |  Heatilator  |  Majestic  |  Marco  |  Martin  |  Preway  |  Superior  |  Temco

More Information For More Information And How To Measure For Your Zero Clearance Fireplace Door - Follow This Link

*Please note that while tempered glass is very durable, it isn’t designed to withstand temperatures over 400°F. Using your fireplace door improperly will lead to busted glass and void our warranty.