Fire by Design 48" Legacy Round Crystal Cove Finish Natural Gas Fire Bowl - 24VAC AWEIS With Field Serviceable Pilot Burner PC43280 52" Type 1 Thermal Resistivity:

52" Type 1 Thermal Resistivity:

4" Black Ceiling Plate

although it does depend upon the size of the fireplace and also the size of the room itself

Type: Wood Media

This feature automatically adjusts the flame height (Hi/Med/Low) to stay at an even and more comfortable room temperature while operating the fireplace at its peak efficiency by monitoring and adjusting automatically to the space temperature

Fire by Design 48" Legacy Round Crystal Cove Finish Natural Gas Fire Bowl - 24VAC AWEIS With Field Serviceable Pilot Burner PC43280 52" Type 1 Thermal Resistivity:48" Legacy Round Fire Bowl; Outer Diameter: 48", Inner Diameter: 42", Height: 20", Base Diameter: 23. 75", Weight: 295 lbs.; 30" Diameter Spiral Burner 221K BTU's (316 Stainless Steel) 1 2 Gas Inlet with NG Orifice; AWEIS Standard Capacity with a Field Serviceable Pilot Burner Natural Gas; Includes 24V Transformer; (1) 36" Flex Line 3 4" with 1 2" x 3 4" Reducer; 38" x 13" Rectangle Aluminum Flat Burner Pan (Bowl Packing & Crating Included in Kit