This is a brand new OEM Single Cell Heat Exchanger Cell Kit for Carrier, Bryant, and Payne central furnaces. The kit includes model numbers 310203-752 and 310201-401. This item is perfect for those looking to replace their old or damaged heat exchanger cell. The kit is compatible with various models of central furnaces and heating systems. It is made from high-quality materials to ensure optimal heating performance. This product is a great investment for homeowners who want to ensure their heating system is running efficiently. This listing is for the Heat Exchanger Cell Kit shown in the photos. This includes One (1) Cell, and one (1) installation kit which includes the required gaskets, screws, and instructions for the installation. There are 3 of these cell kits available.