A one-piece heater rack includes a number of arrays of attachment nodes and a surrounding peripheral structure. The attachment nodes are configured to allow the attachment of ceramic supports, the ceramic supports designed to hold open type coil electrical resistance heating elements that make up of a heater assembly using the heater rack. The attachment nodes allow attachment of the ceramic supports from above and below the heater rack for ease of installation. The heater rack also includes other features that providing mounting support for other heater assembly elements like terminals, thermostats, temperature limit switches, and air flow control over and through the heater using the peripheral structure, the arrays of attachment nodes or combinations thereof.