The Bio Flame Firebox Collection
Bio Flame 24-Inch Double-Sided Ventless Ethanol Firebox with 16-Inch Manual Burner
The Bio Flame 24-Inch Firebox DS is a double-sided, built-in bioethanol fireplace designed for custom residential and commercial installations. Its ventless design creates a real flame without requiring a chimney, flue, gas line, or permanent fuel connection, while the insulated 304 stainless steel firebox and 8 mm tempered glass support a clean architectural installation.
FB-DS-24-16M-Black-Flush — Black / Flush GlassFB-DS-24-16M-Black-Spacer — Black / Spacer GlassFB-DS-24-16M-Silver-Flush — Stainless / Flush GlassFB-DS-24-16M-Silver-Spacer — Stainless / Spacer Glass
Best concise answer: Choose the Bio Flame 24-Inch Firebox DS when you need a compact, double-sided, built-in ethanol fireplace with real flames and no chimney or gas connection. Do not choose it as a primary heating appliance or for an exposed outdoor location.
Firebox Type Double-sided / see-through
Burner 16-inch manual burner
Fuel Bioethanol
Installation Built-in, ventless design
A Compact Double-Sided Fireplace for Custom Architectural Installations
The Bio Flame 24-Inch Firebox DS is designed for buyers who want a real-flame fireplace feature without constructing a chimney or extending a gas line. Because the firebox is double-sided, the flame remains visible from two opposing spaces, making the unit well suited to room dividers, partition walls, open-concept interiors, hospitality settings, and custom feature walls.
The firebox uses a 16-inch manual bioethanol burner. The standard manual configuration does not require electrical power for operation, although all installation, room-size, ventilation, glass, fuel, and clearance requirements in the manufacturer manual must still be followed.
Quick Specifications
| Specification |
Manufacturer Information |
| Product |
Bio Flame 24-Inch Firebox DS |
| Firebox configuration |
Double-sided / see-through |
| Burner type |
16-inch manual burner |
| Fuel type |
Bioethanol fuel |
| Application |
Indoor and protected outdoor installations |
| Firebox construction |
304 stainless steel, double-walled and fully insulated |
| Internal frame |
Brushed stainless steel |
| Glass |
8 mm tempered glass |
| Overall dimensions |
36 × 24 × 11 inches / 914.4 × 609.6 × 279.4 mm, stated as H × W × D |
| Fuel capacity |
2.5 liters |
| Approximate burn time |
2.8 hours |
| Maximum net thermal output |
19,839 BTU / approximately 5.815 kW |
| Fuel consumption |
Approximately 1.12 liters per hour |
| Manufacturer-listed indoor heating reference |
Approximately 60–70 m² |
| Minimum room size |
60 m² per burner |
| Electrical requirement |
No electricity required for the standard manual burner |
| Venting requirement |
No chimney or flue; the room must still meet the stated ventilation and minimum-size requirements |
| Certifications |
CE-certified and tested/certified in accordance with EN 16647 |
| Warranty |
Confirm the current warranty term before purchase; supplied source materials contain conflicting warranty information |
Manufacturer dimensions may vary by approximately 2% because of material attributes. The manufacturer recommends using the actual firebox or burner when establishing the final opening rather than relying only on a template.
Available Configurations
The 24-Inch Firebox DS is offered in two finish choices and two glass-mounting styles. Select the variant that matches the intended architectural appearance.
| SKU |
Finish |
Glass Mount |
| FB-DS-24-16M-Black-Flush |
Black |
Flush Mount Glass |
| FB-DS-24-16M-Black-Spacer |
Black |
Spacer Mount Glass |
| FB-DS-24-16M-Silver-Flush |
Stainless Steel |
Flush Mount Glass |
| FB-DS-24-16M-Silver-Spacer |
Stainless Steel |
Spacer Mount Glass |
Flush Mount vs. Spacer Mount Glass
Flush Mount
Glass Aligned with the Frame
The flush-mount configuration aligns the tempered glass with the surrounding frame for a clean, integrated appearance.
Choose this option when the design goal is a streamlined, minimal fireplace face with less visual separation between the glass and frame.
Spacer Mount
Glass Positioned Away from the Frame
The spacer-mount configuration positions the tempered glass slightly away from the frame, creating a more dimensional presentation.
Choose this option when a visible offset between the frame and glass better complements the surrounding wall treatment.
Operational requirement: The glass windscreen is required during operation. Do not operate the appliance without the glass installed, and do not treat the glass choice as an optional safety component.
Black vs. Stainless Steel Finish
Black Finish
The black variant creates stronger contrast around the flame and is well suited to dark wall finishes, modern feature walls, and interiors where the firebox is intended to appear visually recessed.
Stainless Steel Finish
The stainless steel variant emphasizes the metal construction and coordinates naturally with stainless appliances, contemporary architectural finishes, and commercial interiors.
Key Features and Buyer Benefits
Double-Sided Flame View
The see-through design allows the flame to be viewed from two opposing sides, making the firebox suitable for partition walls and shared visual zones.
Ventless Bioethanol Operation
The burner does not require a chimney, flue, or fixed fuel line. The room must still satisfy the manufacturer's minimum room-size and ventilation requirements.
Real Flame Without a Gas Connection
Bioethanol produces a real open flame without extending a natural-gas or propane connection to the fireplace location.
304 Stainless Steel Construction
The firebox uses 304 stainless steel construction for a durable architectural enclosure designed around the burner and flame area.
Double-Walled, Fully Insulated Design
The insulated double-wall construction supports built-in applications when the unit is installed with the required non-combustible materials.
8 mm Tempered Glass
Tempered glass helps shield the flame from drafts and forms a required part of the fully assembled appliance.
Manual Burner Simplicity
The standard 16-inch manual burner is operated with the supplied lighting rod and does not require electrical power.
Indoor and Protected Outdoor Use
The firebox is listed for indoor and outdoor applications, but outdoor installation requires a protective overhang to prevent water damage.
Architectural Finish Options
Black or stainless steel finishes and flush or spacer glass configurations make it easier to coordinate the firebox with the surrounding design.
Who This Firebox Is Best For
Recommended For
- Custom double-sided fireplace installations
- Room dividers and partition walls
- Modern residential feature walls
- Hotels, restaurants, offices, and hospitality interiors
- Projects where a chimney or gas line is impractical
- Buyers who prefer a manually operated real flame
- Protected outdoor entertainment areas
Not Recommended For
- Primary or continuous whole-room heating
- Cooking, heating water, or burning solid materials
- Rooms smaller than the required minimum size
- Installations using combustible cavity materials
- Exposed outdoor locations without an overhang
- Locations near oxygen tanks or flammable vapors
- Buyers who require fully automatic standard operation
Suggested Applications
Room Divider
Use the double-sided flame view to visually connect two spaces while preserving a defined architectural separation.
Open-Concept Living Area
Position the firebox between living, dining, or entertaining zones so the flame remains visible from more than one direction.
Commercial Feature Wall
Create a real-flame focal point in a lobby, restaurant, lounge, office, or hospitality environment without installing a conventional flue system.
Fireplace Conversion Project
The ventless burner concept can support selected custom fireplace conversions, provided obsolete gas connections are professionally disconnected and the final cavity complies with the installation manual.
Protected Outdoor Living Area
Install under an appropriate protective overhang and away from moving branches, curtains, paper, furniture, and other combustible materials.
Custom Designer Installation
The compact format, finish choices, and glass-mount options support tailored residential and commercial fireplace designs.
The included 16-inch manual burner has a manufacturer-listed fuel capacity of 2.5 liters and an approximate burn time of 2.8 hours. Maximum net thermal output is listed at 19,839 BTU, or approximately 5.815 kW, with fuel consumption of approximately 1.12 liters per hour.
Actual performance varies with installation conditions and fuel quality. Although the manufacturer provides an indoor heating reference, the firebox is classified as a decorative appliance intended for occasional use and must not be selected as a primary heating system.
Heating limitation: Do not use this product as the sole heat source for a home or commercial space. Select it for flame ambiance and supplemental warmth only.
Installation Requirements
This firebox is intended for a purpose-built installation. The surrounding cavity, support structure, finishing materials, ventilation, and glass assembly must comply with the manufacturer installation manual.
Non-Combustible Materials Only
The burner and firebox must be installed into non-combustible materials such as stainless steel, concrete, brick, or natural stone.
Cement Board Lining
The firebox cavity must be lined with cement board at least 3/8 inch thick. Cement board must separate the firebox from adjacent framing where required by the manual.
Level and Secure Support
Install the appliance on a level, non-combustible base and anchor the firebox securely before filling or lighting the burner.
Open Ventilation Design
Do not install doors or opening covers over the appliance. The firebox must remain open so the flame receives a continuous supply of air.
Required Glass Assembly
Install the tempered glass according to the manufacturer's instructions before operating the firebox.
No Field Modification
Do not cut sheet metal components or otherwise alter the appliance during installation.
Manufacturer-Listed Framework Opening for the 24-Inch Double-Sided Manual Configuration
| Dimension |
Required Opening |
| Width (A) |
20.85 inches / 529.6 mm |
| Depth (B) |
7.85 inches / 199.4 mm |
| Height (C) |
6 inches / 152.4 mm |
These framework values are taken from the double-sided installation table for the 24-inch firebox with 16-inch burner. Verify all measurements against the actual unit before final framing, finishing, or cutting.
Location, Clearance, and Ventilation Guidance
Minimum Room Size
The room must provide at least 60 m² of space per burner and adequate ventilation. A ventless design does not eliminate the need for fresh air.
Combustible Materials
Position the firebox in a spacious, open area at least 1,500 mm (59.1 inches) from combustible materials such as curtains, wallpaper, or veneer.
Heat-Sensitive Surfaces
Do not install the appliance directly beside wallpaper, laminate, veneer, or other surfaces and adhesives that are not designed for high temperatures.
Traffic and Furnishings
Locate the firebox away from traffic, furniture, draperies, paper, and objects that can move into the flame area because of wind or drafts.
Television Clearance
When installing a recessed television above the firebox, maintain at least 14 inches (35.5 cm) between the top of the firebox and the bottom of the recessed television.
Outdoor Protection
Outdoor installations require a protective overhang. Water damage caused by installation in an exposed location is not covered under the manufacturer's stated installation conditions.
Fueling and Operating Safety
Fire and explosion hazard: Bioethanol is a flammable liquid. Read the complete installation and user manual before filling, lighting, operating, or servicing the appliance.
Use Approved Fuel
The manufacturer recommends The Bio Flame bioethanol fuel and identifies e-NRG as an alternative. Never use gasoline.
Cool Before Refueling
Confirm that the fuel chamber is completely empty and cool before adding fuel. The manual burner lid can remain hot for up to 60 minutes after use.
Clean Spills Before Ignition
Wipe spills first with a dry cloth and then with a water-dampened cloth. Allow the area to dry completely before lighting the burner.
Use the Supplied Lighting Tools
Ignite and adjust the burner only with the supplied lighter and lighting rod. Do not use matches or unauthorized lighting tools.
Never Leave the Flame Unattended
Maintain supervision whenever the appliance is operating or remains hot, and keep children at a safe distance.
Inspect for Residual Fuel
Remove and inspect the burner as directed to ensure fuel has not accumulated beneath it.
No Combustible Decorative Material Over the Flame
Do not position pebbles or refractory media directly over the burner opening or allow decorative material to interfere with the flame.
No Cooking or Solid Fuel
Do not use the firebox for cooking or heating water, and do not burn wood, charcoal, paper, or other combustible objects in it.
Certifications and Intended Use
Bio Flame burners are CE-certified and tested and certified in accordance with EN 16647, which addresses safety, material quality, and production standards for bioethanol fireplaces.
The manufacturer manual states that bioethanol fireplaces are classified as decorative fireplace appliances intended for occasional use rather than continuous primary heating.
Certification status clarification: The manual states that Bio Flame was in the process of obtaining OTL certification in accordance with UL 1370. Do not represent UL 1370 certification as complete unless current manufacturer documentation confirms it.
What's Included
24-Inch Double-Sided Firebox
Fully insulated, double-walled 304 stainless steel firebox with brushed stainless steel internal frame.
16-Inch Manual Burner
Bioethanol burner with manual flame opening and closing operation.
8 mm Tempered Glass
Glass assembly supplied according to the selected Flush or Spacer configuration.
Lighting Rod
Used to safely operate the hot manual burner lid and support ignition procedures.
Lighter
Manufacturer-supplied lighter for use with the lighting rod.
Funnel
Included to support controlled fueling of the manual burner.
Optional Smart Burner Upgrade
The supplied product information identifies a SmartFlame upgrade option with dual-stage flame technology and control through a remote and Wi-Fi application. The standard SKUs listed on this page use the 16-inch manual burner and do not include those smart controls.
Choose the Manual Burner When
- You want operation without electrical power
- You prefer a straightforward manual flame system
- You do not require remote or app-based control
- The 16-inch manual burner performance suits the project
Consider a Smart Upgrade When
- Remote control is a required feature
- Wi-Fi application control is important
- You want the available dual-stage flame technology
- The installation can provide the required electrical supply
Confirm compatibility, included controls, burner dimensions, power requirements, and current SmartFlame specifications before changing from the manual configuration. No separate SmartFlame manual was supplied for this product page.
Expert Recommendation
The Bio Flame 24-Inch Firebox DS is best suited to a compact custom installation where the flame must be visible from two sides and a conventional chimney or gas connection is undesirable. Its strongest use cases are architectural room dividers, modern feature walls, and selected commercial interiors.
Choose the manual configuration when simple, electricity-free operation is more important than remote control. Do not choose this model solely on its listed BTU output: the manufacturer classifies the appliance for decorative or supplemental use, and installation quality, minimum room size, ventilation, clearances, and non-combustible construction remain essential.
Manufacturer Resources
Review both documents before ordering, framing, installing, fueling, or operating the firebox.
Firebox Installation & User Manual Safety, fuel, ventilation, clearances, framing, glass, indoor, and outdoor installation instructions. 24-Inch Firebox DS Specification Sheet Dimensions, burner size, fuel capacity, burn time, materials, thermal output, fuel consumption, and included accessories.
Frequently Asked Questions
Does the Bio Flame 24-Inch Firebox require a chimney or flue?
No. The bioethanol burner does not require a chimney or flue, but the room must still meet the manufacturer's minimum-size and ventilation requirements.
Does the 16-inch manual burner require electricity?
No. The standard manual burner operates without electricity; electrical service is required only when an applicable powered burner upgrade is selected.
Is this a double-sided or see-through fireplace?
Yes. The Firebox DS is designed for viewing from two opposing sides, making it appropriate for room dividers and selected partition-wall installations.
What is the difference between Flush and Spacer Mount glass?
Flush Mount glass aligns with the frame, while Spacer Mount glass sits slightly away from it. Both configurations require the glass to remain installed during operation.
Can the Bio Flame 24-Inch Firebox be installed outdoors?
Yes, but only in a protected outdoor location beneath an appropriate overhang. Do not install it where rain or water can directly reach the appliance.
Can this firebox be used as the primary heat source?
No. The manufacturer classifies it as a decorative appliance for occasional use, not as a continuous primary heating system.
What is the minimum room size for the 16-inch manual burner?
The installation manual lists a minimum room size of 60 m² per burner. Do not install the firebox in a smaller enclosed room.
What fuel should be used in this firebox?
Use the manufacturer-recommended bioethanol fuel or the alternative identified in the manual. Never use gasoline or an unapproved fuel.
Can the burner be refilled while it is still warm?
No. Refuel only after the burner is completely empty and cool; the manual burner lid can remain hot for up to 60 minutes after use.
Can the firebox be installed with wood framing or drywall?
The firebox cavity must use the required non-combustible lining, including at least 3/8-inch cement board. Do not place the appliance directly against combustible or heat-sensitive finishes.
Can doors or a cover be installed over the fireplace opening?
No. The appliance must remain open for airflow and is not designed to operate behind doors or as an enclosed hot box.
Can a television be installed above the firebox?
A recessed television requires at least 14 inches (35.5 cm) between the top of the firebox and the bottom of the television. The complete installation must still account for heat and the television manufacturer's requirements.
Can decorative stones be placed over the burner opening?
No. Decorative media must not cover the burner mouth or interfere with the flame.
Can this firebox convert an existing gas or wood-burning fireplace?
A conversion is possible only when the finished cavity complies with the Bio Flame installation requirements. Existing gas lines must first be disconnected and secured by a qualified licensed professional.
Is the SmartFlame burner included with these SKUs?
No. The listed SKUs include the 16-inch manual burner; any SmartFlame upgrade must be confirmed and ordered as a different compatible configuration.
What warranty applies to this firebox?
Confirm the current warranty term before purchase because the supplied product details and manufacturer specification sheet state different warranty periods.
Before Ordering
Confirm the selected finish, glass-mount style, actual unit dimensions, installation opening, minimum room size, surrounding materials, outdoor protection, and local requirements before construction begins.
Final framing and finish work should be based on the physical firebox and the latest manufacturer documentation. Improper installation, removal of required glass, unauthorized modifications, or operation outside the intended conditions can void approval and warranty coverage.
