American Fyre Designs Mariposa 16" Radiused Bullnose GFRC Hearth

The American Fyre Designs Mariposa 16" Radiused Bullnose Hearth is a purpose-engineered GFRC hearth component designed specifically for the Mariposa 073-series fireplace. This isn't a catch-all slab — it's a precision-matched piece built to complete one fireplace, and to complete it correctly.

Glass Fiber Reinforced Concrete is the material doing the heavy lifting here. GFRC combines the honest, weighty aesthetic of raw concrete with the structural resilience of glass fiber reinforcement, resulting in a hearth surface that handles the demands of a gas fireplace installation without the brittleness or bulk of traditional poured concrete. The finish reads as genuinely crafted — not manufactured — which matters when a hearth is one of the most visually prominent horizontal surfaces in a room.

The 16" radiused bullnose profile is the detail that separates this hearth from a flat platform. The curved, softened front edge gives the fireplace surround a resolved, intentional silhouette — the kind of architectural line that interior designers specify rather than stumble upon. If the straight edge is a sentence that stops abruptly, the radiused bullnose is one that knows how to end.

Compatibility is straightforward: this hearth is designed to pair with the American Fyre Designs Mariposa fireplace (073 series). The fireplace itself is configured to work with select R.H.P. vented and unvented gas appliances — available in both natural gas and propane — which are purchased separately. Always verify your specific Mariposa model against compatibility documentation before ordering to confirm the correct fit.

At $7,535.00, this is a premium component priced to match the quality of the installation it's part of. For a fireplace that's meant to be a focal point rather than an afterthought, a production-line hearth surface is the wrong place to compromise. The Mariposa 16" Radiused Bullnose Hearth is the right one.

• Purpose-built for American Fyre Designs Mariposa 073-series fireplace
• Constructed from Glass Fiber Reinforced Concrete (GFRC) for durability and authentic concrete aesthetics
• 16" Radiused Bullnose profile delivers a softened, architecturally refined front edge
• Compatible with select R.H.P. vented and unvented gas appliances (sold separately)
• Available for use with natural gas or propane fuel configurations
• Functions as a replacement or standalone hearth component for supported Mariposa models
• GFRC construction resists the brittleness of traditional poured concrete while maintaining visual weight and character