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Customer Questions and Answers for Refrigerator Door Flipper Mullion (Center Rail) by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18047460
Manufacturer Part Number: WPW10151713

This refrigerator door flipper mullion is the folding center rail that bridges the gap between the doors. It helps complete the door seal and reduces condensation along the center for better temperature retention.

  • Bridges the gap between doors to complete the center seal and improve efficiency
  • Folds out of the way when a door opens; flips into place as the doors close
  • Helps limit moisture/sweating at the middle of the refrigerator
  • Replaces a cracked, loose, or broken mullion that causes air leaks, doors popping open, or poor sealing
What's included: One refrigerator door flipper mullion assembly Install notes:
  • Disconnect power before servicing; remove door bins for access
  • Remove mounting screws; lift off the assembly and disconnect the harness if equipped
  • Transfer any end caps/brackets; ensure spring orientation and proper wire routing during reassembly
  • After installation, verify smooth flipping action and a continuous gasket seal down the center

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Questions & Answers

For Whirlpool Refrigerator Door Flipper Mullion (Center Rail) (Part Number: OEM18047460)

1 Answer

Lisa, Replacing the mullion may resolve the issue but you will want to make sure that the mullion is making contact with the piece at the top of the refrigerator. If not making contact then you will need to adjust the unit as it is not level or the door is not level.

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Jason for Model Number built in 42" french door

On my french door refrigerator there is a rail mullion. The mullion has metal contacts at the top and bottom. As I understand it this is a heated element that is inside the rail to help prevent condensation from building on the outside of the rail. When the unit is in the "energy saving" mode, the heating or power to the heating element is turned off. My question is, how much voltage is supposted to be supplied to the Rail between the contact ponts on the top and bottom of the rail? I ask because I would like to use a volt meter to test to ensure that it is working. I have had an abundant amount of moisture build up on the rail over the last few months. This is the first time this has ever happened in 5 years. Also the rail used to be a little warm to the touch before, now it is cold and have LOTS of moisture on it. Thanks for the help.

1 Answer

Hello Jason, This is normally a 120Vac but this is a guess without the specific model number. I would check the resistance of the heater to see if it is open. If it isn't open, but shows a resistance, the issue has been narrowed down to the switch, the wiring or the power supply on the board. If it is open, the mullion heater is in need of replacement. Let us know if you require more assistance and please post the model number next time so we can get specific for you.

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1 Answer

James, There is no glue involved , but its a bit more involved than that. When you open the left refrigerator door, you will find "hinges" or "pivots" mounted to the door liner assembly, You will need to remove the two hex head screws holding the top pivot and the two screws holding the middle pivot. You can then raise the mullian strip up an inch and disconnect the wiring harness in the middle pivot, and change out the part. Good Luck and Thanks

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