World Marketing TT-30 Double Burner Propane tank Top Heater Feature: The low cost outdoor heater is the perfect solution to cold weather work and play! It attaches easily to a standard 20lb LP cylinder. (Sold Separately) to provide instant infra-red heat. Includes adjustable heat control value and built-in safety shut-off. Dual burners can be independently aimed in different directions. Propane tank Top Heater, Double Burner Propane tank Top Heater, Double Burner - Provides up to 30,000 BTU's of quiet, instant infra-red heat; uses 20 lb. propane tank (not included); burner heads swivel independentlyheavy duty steel construction BTU: 18-24-30,000 Height: 12.00 Width: 18.00 Length: 6.00 Weight: 2.07 lbs.