Mitigating Clothes Dryer Fires | UL Solutions
Type 1 clothes dryers may be for use with natural gas, manufactured gas, mixed gas, propane gas, liquefied petroleum gases, or LP gas-air mixture as marked on the dryer rating plate. The basic standard used to investigate products in this category is ANSI Z21.5.1/CSA 7.1, "Gas Clothes Dryers, Volume I – Type 1 Clothes Dryers."