Whirlpool Vertical Mullion Rail WP12722803AP OEM Part

Apollo Gray Refrigerator Door Support with Mullion Heater

Designed to address challenges in refrigerator door operation, this component ensures smooth opening and closing. It fits a range of Whirlpool brands, including Whirlpool, Amana, KitchenAid, Maytag, Jenn-Air, Magic Chef, Roper, and Admiral. Additionally, Whirlpool provides compatible parts for Sears-Kenmore and Ikea models.

The Flapper Door with Mullion Heater, an original equipment manufacturer (OEM) part, is specifically engineered for Whirlpool refrigerators. Located in the freezer compartment, it plays a vital role in maintaining separate temperature zones by dividing the refrigerator and freezer areas.

Signs indicating a faulty flapper door include:

- Moisture accumulation in the freezer leading to condensation.
- Inconsistent temperature management between the refrigerator and freezer sections.
- Malfunctions in the mullion heater that may cause ice buildup.
- Difficulties with smooth door closure and opening.

Common causes for a malfunctioning flapper door involve normal wear and tear, such as cracks, breaks, or splits from frequent use, warping that disrupts sealing, or damage from excess ice pressing against the door.