What is max cooking temperature of 40000 btu propane gas grill?

Propane gas grills typically have a maximum cooking temperature of around 550-650°F (288-343°C). The exact temperature will vary depending on the specific model and its features, but most propane grills are capable of reaching temperatures suitable for cooking a wide range of foods.

It's worth noting that the BTU (British Thermal Unit) rating of a grill refers to its heat input, which is not directly proportional to the maximum cooking temperature. BTU ratings indicate how much heat the grill can produce, but the actual temperature achieved will depend on factors such as the grill's design, burner efficiency, and heat distribution.

Some high-end propane grills may have additional features, such as infrared burners or sear zones, that allow them to reach even higher temperatures for specific cooking techniques like searing or grilling at higher temperatures.