Whirlpool Microwave vent damper / air damper assembly W10843943, Replaces 8206442, W10725323, W10748710, WP8206442, 8205772, 8205741, 8205811, 8205558, 8185094, 8184896, 8183858, 4393715, 4393713, W10667245

Genuine Whirlpool microwave vent-damper assembly. It attaches to the outer cabinet/top exhaust opening and directs airflow through the vent duct; the assembly includes the damper door and frame.

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✅ Cross Reference Information

Common Symptoms

• Weak airflow through the external vent
• Microwave exhaust remaining in the kitchen instead of reaching the outside duct
• Damper flap rattling, sticking, or failing to open fully
• Excessive moisture or warm air entering the vent duct when the fan is off
• Visible cracking, breakage, obstruction, or a missing damper assembly

Check Before Replacing

• Disconnect microwave power before inspecting the damper or removing the microwave.
• With power disconnected, visually inspect the damper door and frame for cracks, deformation, debris, or missing pieces.
• Verify that the damper blade moves freely and can open fully without contacting the cabinet, transition piece, or ductwork.
• Confirm that the damper is oriented with its hinge at the top and that the blade opens away from the microwave for the applicable wall- or roof-venting configuration.
• After reassembly, restore power and perform the manufacturer-specified operational check while observing the vent fan and exhaust airflow; do not operate the microwave if the assembly is loose or obstructed.

Pro Tip

Part Details

Key Features

• Genuine Whirlpool microwave air-damper assembly
• Includes the damper door/blade and frame
• Designed for installation at the microwave top or rear exhaust opening, depending on the venting configuration
• Controls airflow direction into the connected vent duct
• The blade must open freely and fully for proper ventilation

Installation Notes

• Disconnect electrical power before service and follow the appliance-specific installation instructions.
• The microwave may need to be removed from its cabinet to access or position the damper; use two or more people for removal and installation because of the appliance weight.
• For wall venting, position the assembly on the rear opening with the hinge at the top and the blade opening away from the microwave.
• For roof venting, position the assembly on the top opening with the hinge at the top and the blade opening away from the microwave.
• Ensure the wall cutout or roof transition provides enough clearance for the blade to open fully before securing the assembly.
• Secure the assembly using the fasteners specified by the applicable microwave installation instructions, then reconnect the vent duct and verify operation.

Verified Compatible Models

AMV1150VAB5, AMV1150VAB6, AMV1150VAS5, AMV1150VAS6, AMV1150VAW5, AMV1150VAW6, AMV2307PFB0, AMV2307PFS0, AMV2307PFW0, KHMS1850SSS0, UMV1160CB8, WMH31017FB0, WMH31017FB1, WMH31017FD0, WMH31017FD1, WMH31017FS0, WMH31017FS1, WMH31017FW0, WMH31017FW1, WMH31017HB0, WMH31017HS0, WMH31017HW0, WMH32519HV0, WMH32519HV1, WMH32519HV2, WMH32519HV3, WMH32519HZ0, WMH32519HZ1, WMH32519HZ2, WMH32519HZ3, WMH32519HZ4, WMH53521HB4, WMH75021HV0, WMH75021HV1, WMH75021HZ0, WMH75021HZ1, WMH78019HV0, WMH78019HV1, WMH78019HV2, WMH78019HZ0, WMH78019HZ1, WMH78019HZ2, WML35011KW0, WML75011HN7, YWMH31017HZ2, YWMH32519HV0, YWMH32519HV1, YWMH32519HV2, YWMHA9019HV3, YWML35011KS0

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.