Superior VRT3136 36" Traditional Vent-Free Gas Fireplace With Back Bay Brown Fiber Liners and Black Metal Floor intermittent-ignition your fireplace may work fine

your fireplace may work fine without the use of the fan

The Napoleon Element 36 built-in

Lava Rocks thickness will be anywhere from 2" to 3"

Osburn Certified Modular Heat Shield System Extension

Superior VRT3136 36" Traditional Vent-Free Gas Fireplace With Back Bay Brown Fiber Liners and Black Metal Floor intermittent-ignition your fireplace may work fineThese universal heat circulating vent free fireboxes combine performance, versatility and value to add the finishing touch and ambiance to any home. Standard features include multiple interior options and heat circulating smooth faced design for increased performance when using a blower. Combined with vent free gas logs, the VRT3100 series is the choice for affordable comfort without compromise. What's Included Vent Free Gas Firebox Hood Mesh Fire