slots as shown in the drawings the slots or first series of holes 21 a being located on an upper portion 106 of the burner body 2 the first series of holes or slots 21 a provide for a flame that produces a higher btu range than of the second series of holes 22 a alone in fig1 the main burner chamber 35 has at least one third hole or slot 23 a defined at the top 78 of an inner wall 34 which creates a sustaining flame button 23 as shown in fig5 the third hole or slot 23 a is of a small diameter so as to create a very small sustaining flame button 23 the third hole or slot 23 a is located on the upper portion 78 of the burner body 2 the first and second series of holes 21 a 22 a and the third hole or slot 23 a all communicate with the main burner chamber 35 and provide an ignitable gas air mixture the bottom of the burner cap 74 is shaped similarly to the upper portion 106 of the burner body 2 and covers the main burner chamber 35 in fig1 and 7 the burner cap assembly 3 therefore has a centrally located opening 224 theredefined the cover plate 6 may have a centrally located hole or opening 256 theredefined in fig4 a secondary inlet chamber 10 is interposed between the primary inlet chambers 9.