Check the listing for details. Blackstone Outdoor Combo Griddle, 4-Burner 36" Propane Flat Top Grill. Color: Black, Condition: New. Listed at 399.86 USD. The Blackstone Outdoor Combo Griddle, 4-Burner 36" Propane Flat Top Grill is a high-quality outdoor cooking appliance with a medium grill size and a powerful 60000 BTU output. Made of durable steel, this grill features four burners, an analog control panel, and a 1-year manufacturer warranty. The included cover provides protection when not in use. With a cooking area measuring 22 inches in length and 36 inches in width, this versatile grill is perfect for preparing a variety of outdoor dishes.The Blackstone Outdoor Combo Griddle, 4-Burner 36" Propane Flat Top Grill is a high-quality outdoor cooking appliance with a medium grill size and a powerful 60000 BTU output. Made of durable steel, this grill features four burners, an analog control panel, and a 1-year manufacturer warranty. The included cover provides protection when not in use. With a cooking area measuring 22 inches in length and 36 inches in width, this versatile grill is perfect for preparing a variety of outdoor dishes.