WP12722803AP - Genuine OEM Whirlpool Refrigerator Door Mullion Rail, Apollo Grey

WP12722803AP – Genuine OEM Whirlpool Refrigerator Door Mullion Rail (Apollo Grey)

The WP12722803AP Genuine OEM Whirlpool Refrigerator Door Mullion Rail (Apollo Grey) is an original manufacturer replacement part designed for compatible Whirlpool French-door refrigerators and select models from affiliated brands. This genuine OEM door mullion rail (also known as a flipper assembly or mullion heater assembly) creates an airtight seal between the refrigerator doors, helping maintain proper cooling efficiency while reducing air leakage and condensation. Appliance Kingdom proudly supplies this genuine OEM Whirlpool part with fast Canada-wide shipping, making it an ideal choice for homeowners, landlords, and appliance repair professionals. Replacing a worn or damaged mullion rail commonly restores proper door sealing, improves energy efficiency, and helps maintain consistent refrigerator temperatures.

What Does the Refrigerator Door Mullion Rail Do?

The refrigerator door mullion rail is mounted on one of the French doors and automatically pivots into position when the doors close. It creates a tight seal between both doors, preventing warm air from entering the refrigerator compartment. This assembly also contains a mullion heater that helps reduce moisture and condensation along the centre door seal.

Because this component directly affects door sealing and cooling performance, using a genuine OEM replacement ensures the correct fit, proper alignment, reliable operation, and long-term durability. A damaged or worn mullion rail can lead to air leaks, excessive condensation, increased energy consumption, and uneven cooling throughout the refrigerator.

Common Symptoms Indicating Replacement

If your refrigerator is experiencing any of the following issues, the door mullion rail may need replacement:

• Refrigerator doors do not seal properly
• Warm air leaking between the French doors
• Excess moisture or condensation around the centre door seal
• Refrigerator compartment running warmer than normal
• Door flap or mullion not pivoting correctly
• Refrigerator doors difficult to close or align
• Increased compressor run time due to air leakage
• Visible damage, cracking, or wear on the mullion rail

Replacing a damaged mullion rail often restores proper door sealing and cooling performance when the assembly itself has failed. Similar symptoms may also be caused by worn door gaskets, misaligned hinges, or door adjustment issues, so proper diagnosis is recommended.

Compatibility Guidance

This part is designed for compatible Whirlpool French-door refrigerators and may also be used on select models from KitchenAid, Maytag, Jenn-Air, Amana, Inglis, Magic Chef, Kenmore, and other Whirlpool family brands.

Before ordering:

• Verify your refrigerator model number.
• Confirm that WP12722803AP is specified for your appliance.
• Contact Appliance Kingdom if you need assistance confirming compatibility.

Model verification helps ensure the correct fit and prevents unnecessary returns.

Replaces Part Numbers

Verified replacement part numbers include:

• 12722803AP
• 12722803APK
• 12722803APN
• 12722803G
• 12732501AP
• 12732501APQ
• 12732501G
• 67003266
• 67003433
• W10199882
• AP6005546

Key Features & Benefits

• Genuine OEM Whirlpool replacement part
• Apollo Grey finish to match original appliance appearance
• Built to original manufacturer specifications
• Creates a proper airtight seal between French doors
• Integrated mullion heater helps minimise condensation
• Restores cooling efficiency and door alignment
• Precision-engineered for reliable performance and long service life
• Suitable for homeowners, landlords, property managers, and professional appliance technicians

Installation Overview

Replacing the refrigerator door mullion rail typically involves removing the existing assembly from the refrigerator door and reconnecting the electrical connector for the integrated heater.

Installation is generally considered moderate. Experienced DIY users with basic appliance repair knowledge can often complete the repair successfully. Since the assembly includes an electrical heater connection, disconnect power before beginning the repair. Professional installation is recommended if you are unsure of the procedure.

Canada-Wide Availability & Supplier Trust

Appliance Kingdom is a trusted Canadian supplier of genuine OEM and high-quality replacement appliance parts. We ship from Canada to customers nationwide, helping homeowners and repair professionals receive dependable parts quickly while supporting repairs that meet Canadian appliance standards.

Whether you're maintaining your own refrigerator or servicing customer appliances, Appliance Kingdom provides reliable products backed by knowledgeable customer support.

Buyer Confidence & Reassurance

When you purchase the WP12722803AP Genuine OEM Whirlpool Refrigerator Door Mullion Rail (Apollo Grey) from Appliance Kingdom, you receive:

• Genuine OEM Whirlpool quality
• Precision fit for compatible refrigerator models
• Reliable door sealing performance
• Support to help verify compatibility before ordering
• Fast, dependable shipping across Canada