The Sustainable Hearth TrueFlame 150 3DX is a premium built-in electric fireplace centered on a 4K LCD flame display. It is designed for projects where flame realism, a wide cinematic presentation, and flexible viewing configurations are the main priorities.
The fireplace can be installed as single-sided, left- or right-corner, or three-sided using the included conversion components. It is available with either Woodland Logs or an upgraded Real Logs package.
At a Glance
| Best for | Large living rooms, custom media walls, lobbies, hospitality spaces, and open-concept interiors |
| Installation type | Built-in; single-sided, corner, or three-sided |
| Approximate dimensions | 59" W × 18" H × 11 1/4" D |
| Flame technology | 4K LCD flame screen |
| Media options | Woodland Logs or Real Logs |
| Controls | Remote control and app connectivity |
| Venting required | No |
Good Fit If
- You want one of the most realistic screen-based flame presentations available.
- You need single-sided, corner, or three-sided installation flexibility.
- You are designing a large media wall or statement feature.
- You prefer a wide, cinematic flame display.
- You want remote and app-based control.
- You want to choose between standard Woodland Logs and upgraded Real Logs.
Not Ideal If
- You need a shallow fireplace for a narrow wall cavity.
- You want a see-through fireplace visible from two separate rooms.
- You need multiple width options within the same series.
- You want a basic value-focused fireplace rather than premium flame technology.
- You prefer a freestanding or simple wall-mounted installation.
Key Features
- 4K LCD flame screen: Produces a high-definition, cinematic flame presentation with strong depth and clarity.
- Flexible viewing configuration: Install as single-sided, corner, or three-sided with the included conversion components.
- Adjustable visual settings: Customize flame appearance, brightness, and color.
- Frameless design: Creates a clean edge-to-edge architectural look.
- Remote and app control: Adjust settings without accessing the fireplace directly.
- Electric operation: No gas line, combustion venting, or fuel storage required.
- Two log-set choices: Select Woodland Logs or the upgraded Real Logs package.
Installation and Fit
The TrueFlame 150 3DX is intended for a framed, built-in installation. It comes in a single-sided configuration with conversion components for left- or right-corner and three-sided layouts. At approximately 11 1/4 inches deep, it requires more wall depth than a slim electric fireplace.
Confirm framing dimensions, electrical requirements, clearances, and finish materials using the current cut sheet before construction begins. Professional installation is recommended.
What’s Included
- Sustainable Hearth TrueFlame 150 3DX electric fireplace
- Selected Woodland Logs or Real Logs package
- Conversion components for corner and three-sided configurations
- Remote control
- Installation and planning documentation
Product Specifications
| Brand | Sustainable Hearth |
| Model | TrueFlame 150 3DX |
| Product category | Built-in linear electric fireplace |
| Viewing options | Single-sided, left corner, right corner, or three-sided |
| Approximate size | 59" W × 18" H × 11 1/4" D |
| Flame display | 4K LCD screen |
| Media choices | Woodland Logs or Real Logs |
Common Questions
What is the difference between Woodland Logs and Real Logs?
The firebox and flame technology are the same. The Real Logs variant upgrades the included log presentation for a more natural premium appearance.
Can the TrueFlame 150 3DX be installed as a three-sided fireplace?
Yes. It includes conversion components for single-sided, corner, and three-sided configurations.
Is it a see-through fireplace?
No. It supports front, corner, and three-sided viewing, but it is not designed as a transparent double-sided fireplace between two rooms.
Does it require venting or a gas line?
No. It is an electric fireplace and does not require combustion venting or a gas connection.
Is professional installation recommended?
Yes. This is a large built-in fireplace that requires proper framing, electrical planning, and finish clearances.
Guides and Manuals
Specifications and installation guidance on this page are based on current manufacturer manuals, specification sheets, and product documentation linked below. Confirm final framing and electrical requirements in the model-specific manual.
Related Buying Guides
- Electric Fireplace Buying Guide
- Electric Fireplace Sizes Explained
- Built-In vs Wall Mounted Electric Fireplaces
- Best Electric Fireplace for a Media Wall
- Can You Mount a TV Above an Electric Fireplace?
Related Collections
- Sustainable Hearth Electric Fireplaces
- Built-In Electric Fireplaces
- Three-Sided Electric Fireplaces
- Shop All Electric Fireplaces
Why Buy From Very Good Fireplaces?
- Authorized-dealer product guidance
- Help comparing size, installation type, and fit
- Support using verified manufacturer information
Need help choosing the right fireplace for your space?
