Empire Keystone Deluxe B-Vent Zero Clearance Gas Fireplace, 36"

The Empire Keystone Deluxe B-Vent Fireplace delivers 25,000 BTU/hr of natural gas heat through a clean, flush-face design that integrates neatly into a finished surround without demanding additional clearance from combustibles. At 36 inches wide and 83 pounds, it's a substantial unit built to anchor a room — not just accessorize it.

Millivolt ignition means this fireplace operates entirely without a dedicated electrical connection. That's not a minor detail: in a power outage, your fire keeps burning. The self-contained ignition system is simple, proven, and doesn't ask anything of your home's wiring.

Venting runs through a 6-inch diameter B-vent, which draws combustion air from the room and exhausts vertically — a straightforward approach that's been the standard for interior gas fireplaces for decades, and remains the right choice for many installations.

The Keystone Deluxe ships with a log set that is specifically engineered for its burner configuration. This isn't a limitation so much as a deliberate design decision: the pairing ensures combustion performance, flame appearance, and safety all work together as intended. Swapping in alternate media isn't supported, and for good reason.

Running natural gas out of the box, the unit is compatible with a natural gas to propane conversion kit if your home runs on LP — making it adaptable without requiring a separate SKU. On louvered models, the optional FBB4 automatic blower with variable speed control is a compatible upgrade worth considering if active heat circulation matters to your space.

This is a zero-clearance fireplace, which means installation flexibility isn't sacrificed to accommodate a thick firebox wall. Frame it into new construction or a remodel without building out a massive chase around it.

At $1,969, the Keystone Deluxe sits in a range where build quality, a reputable manufacturer, and a no-electricity-required ignition system make it a considered purchase — not an impulse buy, but the kind of fireplace that earns its place in a room for years.

• 25,000 BTU/hr maximum input — natural gas
• 36-inch wide, flush-face zero clearance design
• Millivolt ignition: operates independently of household electricity
• 6" diameter B-vent for vertical venting
• Included log set is purpose-matched to the burner — no alternate media supported
• Convertible to propane with a natural gas to propane conversion kit (sold separately)
• Compatible with optional FBB4 automatic blower with variable speed control (louvered models)
• Zero clearance construction for flexible installation in new builds or remodels
• 83 lbs — substantial, well-built construction