Insulation Compatibility: Extended inlet shank eliminates the need for extra nipples on heaters with 2" insulation

preventing nuisance lockouts and ensuring the gas valve opens reliably upon call for heat

Use the factory-calibrated slide switches to match your motor’s maximum FLA to the output scale on your controller

the A28AA-20 is the designated replacement

the 8105-029BX serves as the official updated successor to the S8105-029 legacy model

Reznor 115151 Gasket R-134A Insulation Compatibility: Extended inlet shankThe Reznor 115151 Gasket is a critical OEM replacement part engineered for high temperature sealing in industrial and commercial heating systems. Designed specifically as an inner exhaust box cover gasket, this component ensures a gas tight seal to prevent flue gas bypass and maintain optimal combustion efficiency. Measuring 1 1 2" x 1 8" x 11", the 115151 is a standard fit for many Reznor gas fired unit heaters, providing the necessary thermal