When operating under a high percentage of relative humidity, these heated transfer lines prevent condensation from forming in the fuel cell feed reactant gas. The heated transfer lines are designed to fit between the reactant gas humidifier and the fuel cell. Built to customer specified length, available in standard sizes from 1/4" to 2" in diameter. Choose between teflon lined or stainless steel, and select operating voltage. Thermocouple and cord designed to mate with Fideris® humidifiers.