Our H Torpedo Burners C reate a High Flame Bonfire Effect PRODUCT FEATURES: 304 stainless steel H-burner for lasting durability Torpedo nozzle ports create bold, bonfire-like flames Heat outputs by size (dependent on gas input): 18″ x 6″ Model: Up to 125,000 BTUs 24″ x 6″ Model: Up to 150,000 BTUs 30″ x 8″ Model: Up to 175,000 BTUs 36″ x 8″ Model: Up to 200,000 BTUs 48″ x 10″ Model: Up to 250,000 BTUs 60″ x 10″, 72″ x 10″, and 84″ x 10″ Models: Up to 300,000 BTUs Raised hub design prevents water entry into gas line 3/4″ Hub Compatible with natural gas or propane (Propane Models will need to installed in a fire pit using propane fire pit build principles) Outdoor use only Backed by HPC’s Limited Lifetime Warranty 3/4″ Hub