The Microwave Exhaust Adapter is an OEM replacement part for GE built-in microwave ovens. Located at the top or rear of the microwave, the exhaust adapter connects the ventilation system that removes steam, smoke, and odors produced during cooking.  Symptoms of a bad exhaust adapter can include:  Moisture or steam films accumulating on interior surfaces    Strange vibration noises coming from the ventilation connection Reduced cooking efficiency as hot air lingers inside the cavity Visible cracks, separations, or blockages in the adapter itself Causes of a bad exhaust adapter microwave include natural wear from repeated heating cycles, cracks or damage from installation/removal, or blockages from grease/ residue accumulation over time. This OEM GE part is also compatible with Hotpoint, RCA, and some Kenmore built-in microwave models.WB02X32715 (AP6874030) replaces WB06X10568, WB06X10371, WB6X10371.