Aspen Industries is the manufacturer of the Master Flame gas logs and vented coal burners. They believe in the quality of their Master Flame log burners so much that they come with a lifetime warranty. Their vented coal burners are very popular with customers looking to convert their old coal fireplace over to natural gas or liquid propane. We also offered single panel, standing screens for fireplaces from Aspen. All Aspen Industries products are manufactured in the US.