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    Superior WRT3920 EPA Certified Wood Burning Fireplace Firebox

    3,911.95
    List Price: $4,809.99
    Sale Price: $3,911.95
    You Save: $898.04 (19%)
    In Stock.
    *Ships same business day.


    Configure item
    • Size: 36 Inch
    • Color: Stainless Steel
    • Product Dimensions: 36" W x 37 5/8" H x 22 3/8" D
    • 175 CFM blower included
    • EPA Rating: 1.8 grams/hr.
    • 20-year limited warranty
    • Durable, high-temperature paint finish
    • High efficiency EPA Certified non-catalytic combustion-controlled wood burner
    • Includes required insulated outside air kit
    • Primary air combustion control for variable heat output
    • Ceramic glass opening with air wash system that keeps the glass clean
    • Advanced Combustion System with bypass control for maximum performance
    • Combines compact and stylish design with advanced combustion technology
    • Precision laser-cut heavy door with heat resistant door handle and easy-close latch
    • White stacked, textured, interior panels with integrated ash lip and heavy steel log retainer
    • Technical Specifications
    • Framing Dimensions: 36" W x 37 3/4" H x 22 1/2" D
    • Actual Viewing Area: 20" W x 13 1/4" H
    • Venting Dimensions: 6" insulated wood burning chimney
    See complete product details >>
    Choose Optional Surround
    Optional surrounds can be used to accent a standard surround, giving the appliance a unique look and cover larger areas.
    More Info
    • Product Features
      • Color: Black
      • Picture frame four sided design
      • Enhances the facade of the fireplace
      • Heavy and durable cast iron construction
      • Designed for the Superior WRT3920WS wood burning fireplace
      More Info
      Superior Cast Iron Surround Kit - For WRT3920 Fireplaces
      Superior Cast Iron Surround Kit - For WRT39 ...
      (add $3,530.00)
      View Product Info
    Choose Forced Air Ventilation Kit
    A forced air kit can be used to move air to other parts of the home or to supply surplus heat to an HVAC system.
    More Info
    • Product Features
      • Forced air kit intended for use with Superior WCT6900, WCT6800, and WCT/WRT4800 fireplaces
      • Includes blower, flex adaptors and clamps, blower speed control, thermal switch, and damper
      • Greatly increases the heating reach of wood burning fireplaces
      • Recommended to be wired to an independent circuit
      • More Info
      Superior Forced Air Starter Kit - For Superior EPA Fireplace Models
      Superior Forced Air Starter Kit - For Super ...
      (add $899.00)
      View Product Info
    • Product Features
      • Includes 15 feet of compressed 5 inch flex duct
      • Corrugated aluminum construction
      • Designed to duct air to adjacent rooms or furnace plenums
      • Ideal for use with Superior BISFWK-1 forced air kit
      • More Info
      Superior Forced Air Flex Duct - For Superior EPA Fireplace Models - 15 Feet
      Superior Forced Air Flex Duct - For Superio ...
      (add $249.00)
      View Product Info
    • Product Features
      • Includes 25 feet of compressed 5 inch flex duct
      • Corrugated aluminum construction
      • Designed to duct air to adjacent rooms or furnace plenums
      • Ideal for use with Superior BISFWK-1 forced air kit
      • More Info
      Superior Forced Air Flex Duct - For Superior EPA Fireplace Models - 25 Feet
      Superior Forced Air Flex Duct - For Superio ...
      (add $349.95)
      View Product Info
    • Product Features
      • Used to control local operation of Superior BISFWK-1 forced air kit
      • Designed to operate independently of home HVAC thermostat
      • Durable, long lasting controls and internal contacts
      • Works with Superior closed combustion wood burning fireplaces
      • More Info
      Superior 120 Volt Thermostat - For Superior Forced Air Heating Systems
      Superior 120 Volt Thermostat - For Superior ...
      (add $396.39)
      View Product Info
    Popular Accessories for this Item
    Venting Components
    See all venting components >>

    Below is a list of chimney components that are compatible with this item. If you are comfortable picking the components that you need for venting this item, please choose from the items below. If you need any help at all, please use our FREE advice from our certified fireplace specialists.

    Free Venting Design and Quote
    Quantity:
    Superior Snap-Pak 6 Inch Diameter Adjustable Support
    Superior Snap-Pak 6 Inch Diameter Adjustable Support
    Superior's goal is to make the best in class products for your fireplace. That's why every Superior Snap-Pak 6 Inch Diameter Adjustable Support they make comes with a limited lifetime warranty. Your fire appliance should work, and that's what this product is here to make sure happens. When you need it, it's there. No hassle.


    List Price: $89.99    Sale Price: $71.95
    Quantity:
    Superior Snap-Pak 6 Inch Diameter Adjustable Tee Support
    Superior Snap-Pak 6 Inch Diameter Adjustable Tee Support
    Homes are unique to the person and it's safe to say your Superior fireplace will have a look all it's own when you're done with it. That's why Superior offers a wide variety of accessories. This Superior Snap-Pak 6 Inch Diameter Adjustable Tee Support will help craft your vision through your needs. It's durable too and with a limited lifetime warranty, you can be sure it will work when you need it.


    List Price: $289.99    Sale Price: $232.95
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    Superior Snap-Pack 6-Inch Diameter Black Cathedral Ceiling Support
    Superior Snap-Pack 6-Inch Diameter Black Cathedral Ceiling Support


    List Price: $319.99    Sale Price: $259.00
    Quantity:
    Superior Snap-Pack 6-Inch Diameter Black Standard Ceiling Support
    Superior Snap-Pack 6-Inch Diameter Black Standard Ceiling Support
    Don't doubt the importance of the right accessory. You can save yourself time and money with the proper equipment in your home, and it's no different with a fire appliance. This Superior Snap-Pack 6-Inch Diameter Black Standard Ceiling Support has a limited lifetime warranty to give you peace of mind. And Superior aims to craft the best in class products on the market.


    List Price: $249.99    Sale Price: $201.95
    Quantity:
    Superior Snap-Pack 6-Inch Diameter Black Single Wall Pipe Adapter
    Superior Snap-Pack 6-Inch Diameter Black Single Wall Pipe Adapter
    Your fireplace or stove should just work. And Superior is here to make sure it does. With the best in class accessories on the market they want to make sure your fire appliance has no trouble. That's why this Superior Snap-Pack 6-Inch Diameter Black Single Wall Pipe Adapter comes with a limited lifetime warranty. Because when you want or need it, your fireplace should not have any trouble. Life's hard enough as it is.


    List Price: $159.99    Sale Price: $129.00
    Quantity:
    Superior Snap-Pack 6-Inch Diameter Black Trim Collar
    Superior Snap-Pack 6-Inch Diameter Black Trim Collar
    The Superior brand is its namesake; Superior. With some of the best-crafted accessories on the market, you can be sure your fire appliance will work at the high level you want it to work. This Superior Snap-Pack 6-Inch Diameter Black Trim Collar comes with a limited lifetime warranty so when you need it, it will function. And if it doesn't you're covered.


    List Price: $49.99    Sale Price: $36.95
    Quantity:
    Superior Snap-Pack 6-Inch Diameter Round Cap with Spark Arrester
    Superior Snap-Pack 6-Inch Diameter Round Cap with Spark Arrester
    Your fire appliance should work, and that's what this product is here to make sure happens. When you need it, it's there. No hassle. Superior's goal is to make the best in class products for your fireplace. That's why every Superior Snap-Pack 6-Inch Diameter Round Cap with Spark Arrester they make comes with a limited lifetime warranty.


    List Price: $159.99    Sale Price: $128.95
    Quantity:
    Superior Snap-Pak 6 Inch 30 Degree Stainless Steel Elbows - 2 Pack
    Superior Snap-Pak 6 Inch 30 Degree Stainless Steel Elbows - 2 Pack
    This Superior Snap-Pak 6 Inch 30 Degree Stainless Steel Elbow two pack will help craft your vision through your needs. It's durable too and with a limited lifetime warranty, you can be sure it will work when you need it. Homes are unique to the person and it's safe to say your Superior fireplace will have a look all it's own when you're done with it. That's why Superior offers a wide variety of accessories.


    List Price: $409.99    Sale Price: $334.95
    Quantity:
    Superior Snap-Pack 6-Inch Diameter 6/12-10/12 Pitch Roof Flashing
    Superior Snap-Pack 6-Inch Diameter 6/12-10/12 Pitch Roof Flashing


    List Price: $279.99    Sale Price: $224.95
    Quantity:
    Superior Snap-Pack 6-Inch Diameter 2/12-5/12 Pitch Roof Flashing
    Superior Snap-Pack 6-Inch Diameter 2/12-5/12 Pitch Roof Flashing
    You can save yourself time and money with the proper equipment in your home, and it's no different with a fire appliance. This Superior Snap-Pack 6-Inch Diameter 2/12-5/12 Pitch Roof Flashing has a limited lifetime warranty to give you peace of mind. And Superior aims to craft the best in class products on the market. Don't doubt the importance of the right accessory.


    List Price: $219.99    Sale Price: $178.95
    Quantity:
    Superior Snap-Pack 6-Inch Diameter Flat Roof Flashing
    Superior Snap-Pack 6-Inch Diameter Flat Roof Flashing


    List Price: $219.99    Sale Price: $178.95
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    Superior Snap-Pack 6-Inch Diameter Firestop Spacer
    Superior Snap-Pack 6-Inch Diameter Firestop Spacer
    Life's hard enough as it is. Your fireplace or stove should just work. And Superior is here to make sure it does. With the best in class accessories on the market, they want to make sure your fire appliance has no trouble. That's why this Superior Snap-Pack 6-Inch Diameter Firestop Spacer comes with a limited lifetime warranty. Because when you want or need it, your fireplace should not have any trouble.


    List Price: $59.99    Sale Price: $43.95
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    Superior Snap-Pack 6-Inch Diameter Insulation Shield
    Superior Snap-Pack 6-Inch Diameter Insulation Shield
    This Superior Snap-Pack 6-Inch Diameter Insulation Shield comes with a limited lifetime warranty so when you need it, it will function. And if it doesn't you're covered. The Superior brand is its namesake; Superior. With some of the best-crafted accessories on the market, you can be sure your fire appliance will work at the high level you want it to work.


    List Price: $169.99    Sale Price: $137.95
    Quantity:
    Superior Snap-Pack 6-Inch Diameter Roof Brace
    Superior Snap-Pack 6-Inch Diameter Roof Brace
    Your fire appliance should work, and that's what this Superior Snap-Pack 6-Inch Diameter Roof Brace is here to make sure happens. When you need it, it's there. No hassle. Superior's goal is to make the best in class products for your fireplace. That's why every product they make comes with a limited lifetime warranty.


    List Price: $149.99    Sale Price: $119.00
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    Superior Snap-Pak 6 x 12 Inch Double-Wall Stainless Steel Pipe - 2 Pack
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    Superior Snap-Pak 6 x 18 Inch Double-Wall Stainless Steel Pipe - 2 Pack
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    Superior Snap-Pak 6-Inch x 24 Inch Long Double-Wall Stainless Steel Pipe
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    Superior Snap-Pak 6-Inch x 36 Inch Long Double-Wall Stainless Steel Pipe
    Superior Snap-Pak 6-Inch x 36 Inch Long Double-Wall Stainless Steel Pipe
    1 Review


    List Price: $269.99    Sale Price: $219.00
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    Superior Snap-Pak 6-Inch x 48 Inch Long Double-Wall Stainless Steel Pipe
    Superior Snap-Pak 6-Inch x 48 Inch Long Double-Wall Stainless Steel Pipe
    Venting can be a snap! That is, it can be with the Superior Snap-Pak 6-Inch x 48 Inch Long Double-Wall Stainless Steel Pipe. With its 6 inch inner diameter, its stainless steel construction makes it perfect for wood burning applications. So don't miss out on this snappy, useful venting today.


    List Price: $299.99    Sale Price: $243.79
    Quantity:
    Superior Snap-Pak 6 x 6 Inch Double-Wall Stainless Steel Pipe - 2 Pack
    Superior Snap-Pak 6 x 6 Inch Double-Wall Stainless Steel Pipe - 2 Pack
    This Superior Snap-Pak 6 x 6 Inch Double-Wall Stainless Steel Pipe two pack will help craft your vision through your needs. It's durable too and with a limited lifetime warranty, you can be sure it will work when you need it. Homes are unique to the person and it's safe to say your Superior fireplace will have a look all it's own when you're done with it. That's why Superior offers a wide variety of accessories.


    List Price: $319.99    Sale Price: $260.95
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    Superior Snap-Pack 6-Inch Diameter Support Band
    Superior Snap-Pack 6-Inch Diameter Support Band
    Superior's goal is to make the best in class products for your fireplace. That's why every Superior Snap-Pack 6-Inch Diameter Support Band they make comes with a limited lifetime warranty. Your fire appliance should work, and that's what this product is here to make sure happens. When you need it, it's there. No hassle.


    List Price: $49.99    Sale Price: $42.95
    Quantity:
    Superior Snap-Pack 6-Inch Diameter Storm Collar
    Superior Snap-Pack 6-Inch Diameter Storm Collar
    Homes are unique to the person and it's safe to say your Superior fireplace will have a look all it's own when you're done with it. That's why Superior offers a wide variety of accessories. This Superior Snap-Pack 6-Inch Diameter Storm Collar will help craft your vision through your needs. It's durable too and with a limited lifetime warranty, you can be sure it will work when you need it.


    List Price: $49.99    Sale Price: $42.95
    Quantity:
    Superior Snap-Pak 6 Inch 15 Degree Stainless Steel Elbow - 2 Pack
    Superior Snap-Pak 6 Inch 15 Degree Stainless Steel Elbow - 2 Pack


    List Price: $539.99    Sale Price: $438.00
    Quantity:
    Superior Snap-Pack 6-Inch Diameter Stainless Tee with Tee Cap
    Superior Snap-Pack 6-Inch Diameter Stainless Tee with Tee Cap
    Don't doubt the importance of the right accessory. You can save yourself time and money with the proper equipment in your home, and it's no different with a fire appliance. This Superior Snap-Pack 6-Inch Diameter Stainless Tee with Tee Cap has a limited lifetime warranty to give you peace of mind. And Superior aims to craft the best in class products on the market.


    List Price: $319.99    Sale Price: $261.95
    Quantity:
    Superior Snap-Pack 6-Inch Diameter Tee Support
    Superior Snap-Pack 6-Inch Diameter Tee Support


    List Price: $249.99    Sale Price: $201.95
    Quantity:
    Superior Snap-Pack 6-Inch Diameter Wall Band
    Superior Snap-Pack 6-Inch Diameter Wall Band
    Your fireplace or stove should just work. And Superior is here to make sure it does. With the best in class accessories on the market they want to make sure your fire appliance has no trouble. That's why this Superior Snap-Pack 6-Inch Diameter Wall Band comes with a limited lifetime warranty. Because when you want or need it, your fireplace should not have any trouble. Life's hard enough as it is.


    List Price: $79.99    Sale Price: $64.95
    Quantity:
    Superior Snap-Pack 6-Inch Diameter Non-Insulated Wall Firestop
    Superior Snap-Pack 6-Inch Diameter Non-Insulated Wall Firestop
    The Superior brand is its namesake; Superior. With some of the best-crafted accessories on the market, you can be sure your fire appliance will work at the high level you want it to work. This Superior Snap-Pack 6-Inch Diameter Non-Insulated Wall Firestop comes with a limited lifetime warranty so when you need it, it will function. And if it doesn't you're covered.


    List Price: $139.99    Sale Price: $108.95
    Product Details
    Free Venting Design & Quote:
    Manufacturer: Superior
    Part Number: WRT3920-B
    eFireplaceStore Item Number: SUP-WRT3920WS
    UPC: 043593068811

    Features

    • Size: 36 Inch
    • Color: Stainless Steel
    • Product Dimensions: 36" W x 37 5/8" H x 22 3/8" D
    • 175 CFM blower included
    • EPA Rating: 1.8 grams/hr.
    • 20-year limited warranty
    • Durable, high-temperature paint finish
    • High efficiency EPA Certified non-catalytic combustion-controlled wood burner
    • Includes required insulated outside air kit
    • Primary air combustion control for variable heat output
    • Ceramic glass opening with air wash system that keeps the glass clean
    • Advanced Combustion System with bypass control for maximum performance
    • Combines compact and stylish design with advanced combustion technology
    • Precision laser-cut heavy door with heat resistant door handle and easy-close latch
    • White stacked, textured, interior panels with integrated ash lip and heavy steel log retainer
    • Technical Specifications
    • Framing Dimensions: 36" W x 37 3/4" H x 22 1/2" D
    • Actual Viewing Area: 20" W x 13 1/4" H
    • Venting Dimensions: 6" insulated wood burning chimney


    *Venting Requirements: This unit requires venting pipe with an inner diameter of 6 Inches. Please see the Venting Components section on this page if available for venting pipe that must be used with this unit.

    Did you know a wood burning fireplace could be EPA certified? If you're looking for a fireplace that fits that exact requirement, look no further than the Superior WRT3920 EPA Certified Wood Burning Fireplace. This fireplace is a high-efficiency fireplace, with an EPA rating of 1.8 grams per hour and includes a 175 CFM blower, air wash system to keep the glass clean, and a durable, high-temperature paint finish. Don't miss out on this Superior fireplace today!
    Customer Questions & Answers
    5 Questions & 5 Answers
    FRED
    from Santa Rosa Valley, CA asked:
    July 1, 2023
    Does this come with a surround or do I have to get the cast iron one?
    1 Answer
    The surround is not included but is an optional accessory.
    Submitted by: Kathy O. on July 3, 2023

    Stephen M.
    from Alamosa, CO asked:
    April 29, 2023

    Does this come with a standard surround and fresh air kit?

    1 Answer
    The unit does not have a standard surround as one is not required for installation, and while it is not included, an outside air kit can be added to this unit.
    Submitted by: Tyler M. on May 1, 2023

    Roberta J
    from Cayucos, CA asked:
    March 3, 2022
    What clearances from the wall is required? 
    1 Answer
    You can view the framing dimensions and clearance requirements starting on page 15 of this manual. 
    Submitted by: Aaron D. on March 3, 2022

    Kristin
    from Idaho asked:
    August 24, 2021

    Is there a fan that is built in that we need to control? Should we get the thermostat? What exactly do we need to order for a safe and complete installation?

    1 Answer
    Yes, there is a blower included that is connected to a heat-activated sensor. A thermostat is an optional accessory for the optional forced air kit. This unit requires 6 inch insulated Wood Burning Class A chimney for operation. Elbows can be added to offset as needed.
    Submitted by: Jason W. on August 24, 2021

    Sharon T.
    from Prescott, AZ asked:
    April 12, 2020
    How many BTUs does this have? How large space can be heated?
    1 Answer
    Per the manufacturer, 55,000 BTUs, and up to 1,500 square feet.
    Submitted by: Will M. on April 13, 2020

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