Hargrove LCK-BC Latch-Tap Block Kit With Bark Chip SwitchOverview For more than 35 years we have been creating the most beautiful and realistic gas logs available. We offer a full line of vented and vent free gas logs in standard and large sizes, for single open and see through fireplaces. If you desire to enhance your fireplace with gas logs, we have everything you need to make it happen! Description Manual Safety Pilot System with Bark Chip Switch Use Bark Chip switch to turn the main burner on and off