Abstract: An apparatus, methods and systems for an independent air register vent assembly having a register frame assembly, louver components, and a means to adjust the register frame assembly and louver components to a range of lengths and/or widths. A length and/or width adjustable grill assembly covers the register frame assembly. A removable motor-receiver is attached to operate the louver components. The motor-receiver places the louvers into open, closed, and one or more intermediate positions. The louvers may also be manually operated. A remote transmitter controls the motor-receiver. An optional digital thermometer on the transmitter passively displays the room temperature. Low battery and re-powering conditions move the louvers into fully open positions. The air register vent assembly is installable in one or more configurations: manual only, with motor-receiver, and/or with remote transmitter, depending on the option selected. The register vent assembly option can be changed in the field.