Triple Row Burner Construction; Durable Stainless Steel Pan Dimensions: 16.5"L x 14"W x 1.85" H plus 3/4" L x 1/2" Male connection hubs on both ends BTU's: 60,000 BTU Max Suitable for Natural Gas or Propane Gas Fireplace. If using for propane an air mixer valve must be installed Stanbroil 16.5" Triple Fireplace Burner and Pan, Stainless Steel. Suitable for Natural Gas or Propane Gas Fireplace. If using for propane an air mixer valve must be installed.