New Product: White Onyx Non-Combustible Supercast Mantel

White Onyx Non-Combustible Supercast Fireplace Mantel

The Outdoor GreatRoom Company™ is pleased to announce the newest addition to the Non-Combustible Supercast™ Mantel Collection, the White Onyx Non-Combustible Supercast™ Mantel. It has a modern marbled white finish with grey accents.

The non-combustible mantels are a part of the Gallery Collection, an indoor fireplace and accessory collection. They are made of durable fiberglass reinforced concrete and can also be used in outdoor applications, as the material is outdoor-rated. Because of the non-combustible nature of this material it can be used where many real-wood mantels cannot.

Non-combustible Fireplace Mantel and Modern Electric Fireplace

The Non-Combustible Supercast™ Mantels comes in four other finishes: Tavern Brown, Washed Cedar, Polished Midnight Mist, and Cove Grey. Tavern Brown and Washed Cedar finishes have a real wood-look appearance while the White Onyx, Midnight Mist, and Cove Grey have a modern, sleek profile. Because of the reduced clearance to combustibles, they are perfect for use with traditional wood fireplaces, gas fireplaces, and electric fireplaces, indoors or outside.


  • Five Finishes: Polished Midnight Mist, Cove Grey, Tavern Brown, Washed Cedar, and White Onyx
  • Non-combustible
  • Standard lengths of 60” or 72”
  • Custom lengths available
  • Indoor or outdoor use
  • Easy installation and easy to clean
  • Made in USA

The Outdoor GreatRoom Company™ manufactures innovative, upscale products with design appeal for indoor and outdoor living spaces. Products include gas fire pits and gas fire tables, pergolas, outdoor kitchen islands, outdoor gas fireplaces, indoor electric fireplaces and accessories, outdoor patio furniture, custom, and commercial products.


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