DIN 18040 3 Behindertenparkplatz Astria Electronic Natural Gas to Liquid Propane Conversion Kit GCK 40STPFENP. Astria Electronic Natural Gas to Liquid Propane Conversion Kit GCK 40STPFENP Product Details This Gas Conversion Kit contains all of the necessary components needed to complete the conversion of an appliance from the use of one type of gas to the use of another, including labeling that must be affixed to ensure safe operation. Features: Converts from natural gas to liquid propane. Contains all the necessary components for a complete conversion. Includes labeling for safe operation. Designed specifically for Astria Fireplaces.