Size Natural Gas Propane
16" 50,000 BTUs 35,000 BTUs
18" 85,000 BTUs 60,000 BTUs
20" 85,000 BTUs 60,000 BTUs
24" 105,000 BTUs 70,000 BTUs
30" 110,000 BTUs 90,000 BTUs
36" 110,000 BTUs 90,000 BTUs