Optimyst® Pro Box 40" Built-In Water Vapor Firebox - GBF1000-PRO
Dimplex Opti-Myst Pro Box 40 — Built-In Water-Vapor Firebox (GBF1000-PRO)
The Opti-Myst Pro Box 40″ (Model GBF1000-PRO / CDFI1000-PRO) is a powerful built-in water-vapor fireplace that mimics realistic flame and smoke effects using ultrasonic technology. It includes a discrete heater for supplemental warmth up to ~400 sq ft, extensive customization options, and the ability to convert to a see-through installation by removing the back panel.
- Water-vapor flame & smoke illusion; LED enhancements, sound effects and optional log or media bed
- Discrete fan-forced heater for supplemental heat up to ~400 sq ft
- Single- or double-sided use; rear glass sold separately for see-through effect
- 120 V operation; remote control included; glass front remains cool
Quick Facts
- Voltage / Power: 120 V • 1,460 W • 12.17 A
- BTU: ~4,981 BTU
- Heats up to: ~400 sq ft
- Dimensions (W×H×D): 46.625″ × 31.75″ × 16.25″
- Viewing Area: 37.75″ × 16.25″
- Weight: ~91.6 lb
- Warranty: 2-Year Limited Manufacturer Warranty
Technical Specifications
| Brand | Dimplex |
|---|---|
| Model | Opti-Myst Pro Box 40 (GBF1000-PRO / CDFI1000-PRO) |
Performance & Operation
| Electrical Supply | 120 V • 1,460 W • 12.17 A |
|---|---|
| BTU Output | ~4,981 BTU |
| Heating Capacity | Supplemental heat up to ~400 sq ft |
| Flame / Smoke Technology | Water-vapor (Opti-Myst) flame & smoke illusion; LED; remote; sound module |
| Installation Options | Built-in, single- or double-sided (rear glass sold separately) |
Materials & IDs
| Overall Dimensions (W×H×D) | 46.625″ × 31.75″ × 16.25″ |
|---|---|
| Viewing Area | 37.75″ × 16.25″ |
| Weight | ≈ 91.6 lb |
| Warranty Term | 2 years limited |
Documents (PDF): Owner’s Manual & Spec Sheet (PDF)
FAQs
Does it generate heat?
Yes — includes a heater that provides supplemental heat up to ~400 sq ft.
Can it be converted to see-through?
Yes — includes a backer panel that can be removed; rear glass sold separately for double-sided viewing.
What are the electrical requirements?
120 V, 1,460 W, ~12.17 A; dedicated circuit required.
What’s the viewing opening size?
Approximately 37.75″ W × 16.25″ H through the front viewing area.
What is the warranty duration?
2-Year Limited Manufacturer Warranty.
Warranty
Dimplex Opti-Myst Pro Box 40 (GBF1000-PRO) — Manufacturer warranty: 2-Year Limited.
Coverage
| Component | Term | Notes |
|---|---|---|
| All visual and heating components (flame/smoke effect, controls, heater) | 2 years | Defects in materials and workmanship under normal residential use. |
Exclusions & Conditions
- Original purchaser only; proof of purchase required.
- Damage due to misuse, improper installation, or modification is excluded.
- Labor, shipping, or finish materials generally not included.
Manuals & Installation
- Owner’s Manual & Spec Sheet: Download (PDF)
Pre-Install Checklist
- Frame rough opening to accommodate 46.625″ W × 31.75″ H × 16.25″ depth.
- Provide dedicated 120 V circuit rated for ~1,460 W / 12.17 A.
- Ensure structure can support ~91.6 lb securely.
- Allow front access for glass panel cleaning and service; rear access if converting to double-sided.
Compliance & Safety
Install per manufacturer instructions and all applicable electrical & building codes. Only use original parts and accessories; disconnect power before servicing.
Front glass remains cool-touch; avoid contact with internal heater or water-vapor components. Children should be supervised around heated or active parts.