I just bought a char Broil 4 burner commercial series grill. I bought the natural gas conversion kit which came with a 10 ft hose. I need a 15 ft hose. The specs on the hose say .64 specific gravity for 1000 btu’s Per cubic foot of gas at .3 in water column pressure drop. Must be ANSI-z21.54 certified. Does your hose meet these specs?