Swap Your Old Wood Burning Fireplace for a Modern Flames Redstone 42 You Start From the Remote
Slide the Redstone 42 into the firebox, and the fire you used to build is now one button on the remote. The flames run in any season with the heater on or off.

Key Features
- Heat on or off: Run the flames all year, with the 5,000 BTU heater only when you want it.
- 10 flame colors: Set flame, ember bed and downlight colors separately to match the room.
- Insert or built in: Slides into an old wood burning fireplace or a wall framed for it.
- Thermostat and timer: Set the temperature and have it shut off in 30 minutes to 8 hours.
Questions about your opening size or wiring? Call (888) 883-7568 or email contact@resortsdepot.com
The Full Picture
Once the Modern Flames Redstone 42 is in, a press of the remote lights the logs and starts the flames. Turn the heater off and the flames keep going, so it works in July as well as January.
Change the flame color, switch the ember bed to another color, or turn the log lights off.

Who It's For
Homeowners with an old wood burning fireplace can use it as an insert. Builders and remodelers can frame a wall opening for it and have an electrician hardwire it. In a rental or guest property, guests run it from the remote or the touch panel. It is for indoor rooms only.
How the Hybrid-FX Flames Work
Hybrid-FX makes the flame with LED lighting, not a video screen.
- Layered optics: High intensity LEDs shine through layers of optics to shape the flames.
- Tall flames: The flames are made as tall as the vertical viewing area allows.
Specifications
Complete Specifications
| Specification | Details |
|---|---|
| Model Number | RS-4229 |
| UPC | 850011 491256 |
| Overall Size, 5/8" Trim (ships attached) | 39-3/4" W x 27" H x 9-7/8" D [1009 x 686 x 250 mm] |
| Overall Size, 1-5/8" Trim (in the box) | 41-3/4" W x 29" H x 9-7/8" D [1059 x 736 x 250 mm] |
| Body Size | 38-1/2" W x 26-5/8" H x 9-1/4" D [977 x 676 x 234 mm] |
| Viewing Area | 38-1/2" W x 23-1/2" H [977 x 597 mm] |
| Depth | 9-7/8" overall, 9-1/4" body [250 mm, 234 mm] |
| Finished Opening (Built In) | 38-3/4" W x 26-3/4" H x 10" D [985 x 680 x 254 mm] |
| Heater | 5,000 BTU, low 733 W or high 1,465 W, thermostat control. Runs only while the flame is on. |
| Power | AC 120 V, 60 Hz, 1,465 W. Dedicated 15 A grounded outlet and dedicated 15 A (or higher) breaker. |
| Electrical Hookup | Built in: hardwired by a qualified electrician. Insert: plugs into an outlet installed inside the existing fireplace (cord supplied). |
| Minimum Clearance | From the glass front: bottom 0", sides 0", back 0", top 11.8" (300 mm) to mantel and to ceiling. Keep furniture and curtains at least 3 ft from the front. |
| Lighting Colors | 10 colors plus a fade mode, set separately for flame, ember bed and downlight |
| Controls | 6 button touch panel with digital thermostat readout (upper right) and remote |
| Timer | 30 minutes to 8 hours |
| Flame Settings | 4 flame speeds, flame and ember bed brightness levels, log lights on or off |
| Media | Lit driftwood log set, crystal ember bed |
| Use | Indoor only |
| Warranty | 5 years from date of purchase when the owner registers at www.modernflames.com, otherwise the standard 2 year warranty |
Why the Modern Flames Redstone 42 Works in Any Season
- Two heat settings: Low is 733 W and high is 1,465 W, so a cool night doesn't get full heat.
- Color memory: It remembers your flame, ember bed and downlight colors for next time.
- Heater lock: Hold the heater button 5 seconds to lock the heater and thermostat where you set them.
Downloads & Documents
What's Included & Warranty
Included with Your Redstone 42
- Fireplace: Ships with the 5/8" trim attached.
- 1-5/8" trim kit: A thicker trim, in the box.
- Logs and crystals: Driftwood log set and crystal ember bed media.
- Remote control: Comes with a CR2025 battery.
- Hardware: Screws, screw covers, hardware kit, power cord and instruction manual.
Tools and the electrical work are not included.
Optional Accessories (Sold Separately)
- TruWood Premium Timber Kit 42"-44" Large: Replaces the standard logs with a real wood log set.
Warranty & Certifications
- 5 year warranty: Modern Flames covers it for 5 years from date of purchase when the owner registers at www.modernflames.com, and the standard warranty is 2 years if it isn't registered.
- Authorized dealer: Resorts Depot is an authorized Modern Flames dealer.
- Brand heritage: Modern Flames is based in Phoenix, Arizona.
Frequently Asked Questions
The Redstone 42 turns a wood burning fireplace into one you start from the remote. Talk through your opening size and install with a Resorts Depot product expert.