What is the MINIMUM clearance required on the sides and the rear of an unlisted vented gas fireplace?

The minimum clearance required on the sides and the rear of an unlisted vented gas fireplace is 18 inches. This specification is critical for ensuring safety and proper operation of the fireplace. Sufficient clearance helps reduce the risk of fire hazards, allows for adequate heat dissipation, and ensures that the unit can be serviced or maintained safely.

Fireplaces generate significant amounts of heat, and too little clearance could lead to overheating of nearby materials, which may pose a fire risk or damage surrounding structures and furnishings. By adhering to the recommended clearance of 18 inches, you help ensure that the fireplace operates effectively while mitigating potential safety issues.