No sales tax outside Florida · Manufacturer warranty included
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Every row above is published in our Shopify product data for the selected variant. Dimensions, cut-out sizes and electrical or gas requirements vary by model; confirm them against the manufacturer documents below before framing, wiring or plumbing.
Product detail
Upgrade your living room, bedroom, media room, or existing fireplace opening with the Modern Flames Redstone 54 Inch Built in Electric Fireplace Insert. Designed with a clean face appearance, realistic flame movement, and supplemental heat, the Redstone RS 5435 gives homeowners the look and comfort of a traditional fireplace with the convenience of modern electric technology.
This 54 inch electric fireplace insert is ideal for anyone who wants to replace the mess, maintenance, smoke, and ash of an old wood burning fireplace with a clean, modern, and easy to use electric fireplace solution.
The Redstone Series was designed to work beautifully as a built in electric fireplace or as an insert for existing fireplace openings. Its traditional firebox look, black finish, glowing log set, and realistic flame display make it a strong choice for homeowners who want a fireplace that feels classic, warm, and elevated without needing gas lines, venting, or wood storage.
Whether you are refreshing an older masonry fireplace or designing a new built in fireplace feature, the Redstone RS 5435 creates a polished focal point that brings warmth, ambiance, and visual depth to the room.
Modern Flames uses Hybrid FX Flame Technology to create a more realistic electric fireplace experience. The Redstone 54 inch fireplace includes 10 flame color options, adjustable flame speed, ember bed lighting, down lighting, and a premium glowing log set for a rich and customizable fire presentation.
You can keep the flame effect soft and traditional for everyday comfort or adjust the colors and brightness for a more dramatic modern look.
The Redstone RS 5435 includes a 5,000 BTU heater designed to provide supplemental warmth for spaces up to approximately 400 square feet. The flame can operate with or without heat, allowing you to enjoy the ambiance of the fireplace throughout every season.
Use the heat function during colder months, or enjoy the flame display by itself when you simply want the relaxing look of a fire.
This fireplace is built for installation flexibility. It can be used as a built in electric fireplace for new wall designs or installed as an insert to update an existing fireplace opening. The unit can be plugged into a 120V outlet or hardwired by a qualified professional for a cleaner finished installation.
The Modern Flames Redstone 54 Inch Built in Electric Fireplace Insert is a strong choice for homeowners who want the warmth and character of a traditional fireplace with the simplicity of electric operation. It offers realistic flames, flexible installation, customizable lighting, and supplemental heat in one clean, easy to use fireplace system.
For anyone looking to modernize an old fireplace opening or create a refined built in fireplace feature, the Redstone RS 5435 delivers a balanced combination of comfort, design, and everyday convenience.
Before you buy
Resideterra supplies the fireplace; installation is arranged by you or your contractor. Electrical, gas or plumbing work should be completed by a licensed trade in line with the manufacturer installation manual and your local code. We do not provide installation labor.
Orders are processed in 1–3 business days. After shipment, standard transit is typically 2–7 business days. Shipping is free on U.S. orders of $100 or more; orders from $0.01–$99.99 have a $14.99 shipping charge. Tracking is emailed as soon as the order ships. Large items may arrive by freight: the carrier will contact you to schedule delivery, and an adult signature is required. Inspect all packaging before signing and note any visible damage on the delivery receipt.
Warranty coverage is provided by the manufacturer and is stated in the product documentation. For claims or questions, contact us at sales@resideterra.com or +1-888-989-1337 (Mon-Sat, 9:00 AM - 6:00 PM EST).
Eligible standard items may be returned within 30 days when unused, unassembled and in their original packaging. Return authorization is required before sending anything back. Customer-requested returns may be subject to return shipping and restocking fees. Freight, custom, made-to-order and brand-restricted products may have different or final-sale terms, so confirm eligibility with our team before ordering if you are uncertain.
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