This part is a direct OEM replacement heater

the system will adjust the discharge air temperature by 1 degree in the opposite direction to maintain equilibrium

The B43 is a wrapped "Super Gripbelt" designed for smooth operation and slip tolerance

This part is commonly utilized in York/Coleman D1NP048N06506NX

Resideo ZD8X24TZ Damper R-407A This part is a directThe Resideo ZD8X24TZ is a professional grade rectangular zone damper engineered for horizontal or vertical integration into high performance residential and light commercial forced air systems. Measuring 8" wide by 24" high, this parallel blade zone damper utilizes a robust extruded aluminum frame and blades to ensure structural integrity and a low leakage seal, rated at less than 1% at 0. 5 in. WC. This unit is configured as a power closed spring