AZ Patio Heaters TGT-Burner 3BOLT 3 Bolt Hole Pattern Burner for Triangle Glass Tube Patio Heater Comes with Regulator, Thermocouple, and Anti Tilt Safety Devices Mounting hardware not included The 6 hole version may arrive with only 4 holes, but both will fit this mounting style Electric Igniter (Without Battery). Variable Control Knob Please check burner mounting configuration before purchasing