BTU's
1,00,000
1,10,000
1,20,000
1,30,000
1,35,000
1,50,000
1,60,000
1,75,000
125,000
160,000
2,00,000
2,40,000
20,000
25,000
40,000
45,000
50,000
60,000
60,000 to 1,75,000
65,000
70,000
70,000 to 2,19,000
75,000
80,000
88,000 to 4,43,000
90,000
95,000