This part number typically refers to the nylon housing

It features clear terminal markings for 24VAC power (R and B/Common)

coupled with a balanced poppet

Common Questions Why is my humidifier leaking water even when the furnace is off

Laars Heating Systems T2015900 Tile 318423-701 This part number typically refersThe Laars Heating Systems T2015900 Tile is a high density, replacement bottom middle refractory tile engineered specifically for NeoTherm boilers and high efficiency condensing units. As a vital component of the combustion chamber insulation, this tile is strategically positioned in the lower central section of the heat exchanger to facilitate optimal thermal heat transfer while shielding sensitive internal components from high velocity combustion