The Dimplex Opti-Myst Pro 1500 Electric Firebox brings stunning realism and versatile design options to your space. Whether you choose to install it as a single-sided fireplace or convert it into a double-sided design by removing the backer panel, this firebox will be the focal point of any room. With the added convenience of a discrete heater and the incredible Opti-Myst flame effect, you’ll enjoy both warmth and visual appeal.
Features
- Opti-Myst® Flame Effect: Using advanced ultrasonic technology, this firebox creates a fine mist that produces a lifelike illusion of dancing flames and smoke, offering unparalleled realism.
- Customizable Flame Width: Adjust the flame width by adding spacers and slots to suit your desired effect.
- Double-Sided Viewing Option: The included removable high-gloss backer panel allows for easy conversion to a double-sided fireplace. For full conversion, the rear glass pane (GBF1500-GLASS) is included.
- Supplemental Heat: Equipped with an effective fan-forced heater, this unit provides warmth to up to 400 sq. ft., ensuring comfort even with the backer panel removed.
- Easy Installation: Optional plumbing kit (X-206213) allows for hard-plumbing of the water reservoir with copper pipes (sold separately).
- Remote Control: Effortlessly control the firebox settings with the included remote.
- Automatic Shut-Off: The built-in safety feature automatically turns off the unit to prevent overheating.
Specifications
- Product Finish: Black
- Wattage: 1460W
- Voltage: 120V
- BTU: 4981
- Part Number: GBF1500-PRO
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Dimensions:
- Depth: 16 in
- Width: 65 in
- Height: 32 in
- Remote Control: Yes
- Built-in Thermostat: No
- Automatic Shut-Off: Yes
- Power Source: Electric
- Warranty: 2-year limited
Options

Opti-myst- Pro Box Rear Glass Pane
Converts firebox to a see through
Important Information for California Residents
California’s Proposition 65, officially known as the Safe Drinking Water and Toxic Enforcement Act of 1986, requires businesses to provide warnings to California consumers when products may expose them to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
At Eternal Flame Outdoors, we are committed to transparency and customer safety. Some of the products we sell — including fireplaces, heaters, electronics, metals, fuels, and related components — may contain or produce trace amounts of chemicals that appear on California’s Proposition 65 list.
⚠️ Proposition 65 Warning
Certain products sold on this website can expose you to chemicals such as carbon monoxide, lead, silica, nickel, wood dust, or combustion byproducts, which are known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit:
What This Means
A Proposition 65 warning does not mean that a product is unsafe or in violation of any product-safety standards. It simply means that California requires a disclosure when exposures to certain listed chemicals could occur — even at very low levels.
Many everyday items, including furniture, appliances, vehicles, construction materials, and cooking equipment, carry similar warnings in California.
Why Some Fireplace & Outdoor Products Carry Warnings
Products such as fireplaces, fire pits, patio heaters, grills, and electrical components may:
- Contain metals or alloys with trace listed chemicals
- Produce combustion byproducts when used
- Include components such as wiring, coatings, glass, or insulation materials
Because these exposures can vary based on installation, use, and environment, manufacturers often require a Proposition 65 warning out of an abundance of caution.
How We Display Warnings
When required, Proposition 65 warnings may appear:
- On individual product pages
- On product packaging or manuals
- Through a clearly marked “CA WARNING” notice with a link to this page
Our Commitment
We work closely with our manufacturers and suppliers to ensure accurate disclosures, regulatory compliance, and high product standards. If you have questions about a specific product, installation, or materials, our team is happy to assist.
support@eternalflameoutdoors.com



