Modern Flames Redstone 36 inch Built-In Electric Fireplace Firebox Insert
Images & size shown are for reference only: colors may vary by screen, lighting, & natural material variation. See description for dimensions & finish options or call us to request a sample if an exact match is needed.
Modern Flames Redstone 36 inch Built-In Electric Fireplace Firebox Insert - Without Trim is backordered and will ship as soon as it is back in stock.
Pickup available at Maspeth, NY Showroom
Usually ready in 2-4 days
- Free shipping on this item to most of the US, or free local delivery by our team. Most items ship within 1 business day.
- Factory-authorized Modern Flames dealer. You keep the full manufacturer warranty.
- 30-day returns, no restocking fee.
- Professional installation available across NYC, Long Island, Westchester, northern NJ and Greenwich/Stamford, CT.
Free & Flat Rate Shipping
Free & Flat Rate Shipping
- Orders Over $999 Ship Out Fast & Free
- Delivery typically takes 5 -7 transit days
- $19.95-$99.95 Flat-Rate Shipping on orders under $999
- Our team & trucks deliver locally within 60 miles of our showroom. (Tri-State NY,NJ,CT including all of Suffolk County)
- Free Shipping Applies to Contiguous US only - See our shipping page for exclusions e.g. ethanol fuel
Assembly & Installation
Assembly & Installation
Our company installs in the following areas: Manhattan, Queens, Brooklyn, Nassau, Suffolk, Staten Island, Bronx, & Westchester NY. Hudson, Union, Essex, & Bergen NJ. Greenwich & Stamford, CT. Check out our portfolio of projects we built!
WE OFFER INSTALLATION FOR THE PRODUCTS WE SELL BELOW
- Outdoor Kitchens
- Outdoor Fireplaces/Firepits
- Outdoor Pizza Ovens
- Gas Fireplaces
- Gas Inserts
- Gas Log Sets
- Fireplace Doors
- Fireplace Mantels
- Electric Fireplaces
- Water Vapor Fireplaces
- Ethanol Fireplaces
Call for a free quote 718-326-4328
Warranty
Warranty
Manufacturer's warranty their products only if they are purchased from an authorized retailer like us. If an issue occurs and the item was purchased from a 3rd party website i.e. Amazon, your claim may be denied. What this means for you as a customer? As a factory authorized & trained dealer for every brand on our website, you will maintain full manufacturer's warranty. Please click on the manufacturer's manual in the description for full warranty coverage information.
Returns
Returns
- No-Restock Fees
- 30-Day Return Policy
- The NYC Fireplaces Team wants you to love what it is that you've ordered! If for some reason you have an issue with your product, we offer a '30-Day Return Policy'.
- We allow returns on all new, unused, unassembled, and "resalable" items in their original packaging within 30 days of the delivery date for a refund (minus the original shipping costs, and the shipping costs you incur shipping the product back). Naturally, if your return is because of our error, you are not responsible for any shipping costs.
Modern Flames Redstone 36 inch Built-In Electric Fireplace Firebox Insert - Without Trim is backordered and will ship as soon as it is back in stock.
Description
Description
Overall Dimensions: 33-3/4 x 24 x 9-7/8 in. D with 5/8 in. trim, 35-3/4 x 26 x 9-7/8 in. D with 1-5/8 in. trim; finished opening 32-5/8 x 23-7/8 x 10 in. D (Redstone owner's manual)
The Modern Flames Redstone 36 (RS-3626) is a traditional-look electric firebox that either slides into an existing fireplace or builds flush into a new framed wall. It brings a log fire picture and real supplemental heat to a fireplace you no longer burn, or to a wall that never had one.
Ten flame colors and ten ember bed colors, a flame brightness control and four flame speeds are run from the touch panel or the included remote. Driftwood logs and glacier crystals come in the box, along with a second, thicker trim.
Features
- 36 in. built-in or insert electric fireplace
- Slides into an existing fireplace or frames flush into a new wall
- 10 flame colors and 10 ember bed colors, each with a fade mode
- 733 W or 1,465 W heater, about 5,000 BTU, with thermostat
- Timer from 30 minutes to 8 hours
- Ships with 5/8 in. trim installed plus a 1-5/8 in. trim in the box
Key Specifications
| Model | RS-3626 |
|---|---|
| Type | Built-in or insert electric fireplace |
| Electrical | 120V, 60 Hz, 1,465 W (5,000 BTU); dedicated 15 A circuit |
| Heat settings | 733 W and 1,465 W, thermostat 0 to 10 |
| Flame | 10 flame colors and 10 ember colors plus fade; 4 flame speeds; 5 brightness levels |
| Timer | 30 min to 8 hours |
| Media | Driftwood logs and small glacier crystals (included) |
| Clearances | 0 in. bottom, sides and back; 11.8 in. from the glass to a mantel or ceiling above |
| Optional wide trim | TK-RS36-4128 (4 in.) or TK-RS36-4530 (6 in.) |
Dimensions and Framing
| With 5/8 in. trim | 33-3/4 x 24 x 9-7/8 in. D |
|---|---|
| With 1-5/8 in. trim | 35-3/4 x 26 x 9-7/8 in. D |
| Finished opening (built-in) | 32-5/8 x 23-7/8 x 10 in. D |
| Top clearance | 11.8 in. (300 mm) to mantel or ceiling |






What Is Included and What You Will Need
- Included: RS-3626 fireplace, remote, driftwood logs, glacier crystals, 1-5/8 in. trim kit, screw covers and hardware, per the owner's manual
- Required: a dedicated 120V 15 A circuit; for an insert, an outlet inside the existing fireplace wired by an electrician
- Optional: Modern Flames 36 in. extra-wide trim surround
Installation Notes
For a built-in, frame a 32-5/8 x 23-7/8 x 10 in. D finished opening and keep 11.8 in. from the glass to a mantel. For an insert, clear the existing fireplace, add an outlet inside it, then slide the unit in; it is held by gravity and friction. Never use an extension cord. Electric fireplaces need no gas line or venting, which makes them one of the simplest fireplace options for New York City apartments and co-ops, subject to building and board approval for any electrical work. Book a design consultation to plan an insert or a new built-in wall.
Documentation
- Modern Flames Redstone RS-2621 to RS-5435 Owner's Manual (2023)
- Modern Flames Limited Warranty (2022-2023)
Frequently Asked Questions
Can it go in my existing fireplace?
Yes. The Redstone is designed to slide into an existing fireplace with an outlet installed inside, or to build into a new wall.
How much heat does it give?
Up to 1,465 W, about 5,000 BTU; the heater runs only with the flame on.
Which trim should I use?
It ships with a 5/8 in. trim and a 1-5/8 in. trim; Modern Flames also sells extra-wide trim kits to cover a larger opening.
Related reading: Electric Fireplace Buying Guide and Best Fireplace for an NYC Apartment.
Warranty
Modern Flames limited warranty (2022-2023 policy), which covers all Modern Flames brand products bought from authorized dealers: 5 years from the date of purchase when the owner registers the product at modernflames.com, otherwise the standard 2 years; integrated screens 1 year. The warranty is not transferable, consumable and normal wear parts are excluded, and Modern Flames must be contacted first to troubleshoot before service.























