Neutra-Safe tray/tank configurations are available with capacity guidelines of 5 million and 6 million BTUH. Utilizing the same media as the clear tube neutralizers, the high-capacity tray/tank neutralizers are the solution for larger high-efficiency, gas-fired appliances from 2 million to 6 million BTUH. The tray and tank are molded in polyethylene making them extremely durable. The tank model is equipped with a large 5-inch diameter vented cap. The tray model is equipped with a clear lift-off cover, making visual inspection and media replacement easy.