Aprilaire #4739 Female Disconnect For Models 700, 700A, 700M
Female disconnect assembly (AKA Relay Harness Assembly) - this is where wiring connection is made between two halves of humidifier. This assembly is attached to the front of the humidifier, which is the side that houses the fan blade. Connects wwith the #4240 Male Wiring Harness.
NOTE: This part fits NEWER Powered humidifiers with Blue/Gray Case (use Female Disconnect Assembly #4239 for older, Almond-colored models).