Napoleon GL24NE 24 Inch Vented Gas Log Set for Natural Gas 100% electric ignition - no electricity required and no standing pilot 50% flame/heat adjustment for maximum comfort and efficiency Compete with Electronic ignition gas valve, built-in flame control, burner, grate and more Minimum Size Fireplace Opening: 20" H x 28" W 14" D Comes ready with natural gas, for propane conversion kit W175-0348 is required