An air filtration apparatus comprising: an airflow powerhead assembly including a motor-driven fan assembly and a vane assembly, the airflow powerhead assembly defining a dirty air inlet at which debris-laden air is drawn into the air filtration apparatus using the fan assembly; a filter assembly including filter media, the filter assembly being configured to remove debris from the debris-laden air; and a separator chamber housing inside of which the filter assembly is disposed, wherein the airflow powerhead assembly is disposed on a first axial side of the separator chamber housing with respect to a longitudinal axis of the air filtration apparatus, the separator chamber housing has a chamber inlet at the first axial side and a clean air outlet at a second axial side of the separator chamber housing opposite the first axial side, the filter assembly has a first axial end adjacent the chamber inlet and a second axial end adjacent the clean air outlet, the separator chamber housing includes at least one debris ejection slot extension configured to eject the debris from an inner space of the separator chamber housing to a surrounding environment, and the filter assembly includes a debris catch tray disposed at the second axial end, the debris catch tray having a debris ejection slot aligned with and communicating with the at least one debris ejection slot extension for ejecting the debris from the inner space of the separator chamber housing to the surrounding environment, characterised in that: the debris catch tray includes a plurality of filter alignment ridges provided on an outer circumferential surface of the debris catch tray, the separator chamber housing includes a plurality of filter alignment grooves formed on an inner surface of the separator chamber housing, and the filter alignment ridges are configured to mate with the filter alignment grooves such that the debris ejection slot aligns with the at least one debris ejection slot extension. an airflow powerhead assembly including a motor-driven fan assembly and a vane assembly, the airflow powerhead assembly defining a dirty air inlet at which debris-laden air is drawn into the air filtration apparatus using the fan assembly; a filter assembly including filter media, the filter assembly being configured to remove debris from the debris-laden air; and a separator chamber housing inside of which the filter assembly is disposed, wherein the airflow powerhead assembly is disposed on a first axial side of the separator chamber housing with respect to a longitudinal axis of the air filtration apparatus, the separator chamber housing has a chamber inlet at the first axial side and a clean air outlet at a second axial side of the separator chamber housing opposite the first axial side, the filter assembly has a first axial end adjacent the chamber inlet and a second axial end adjacent the clean air outlet, the separator chamber housing includes at least one debris ejection slot extension configured to eject the debris from an inner space of the separator chamber housing to a surrounding environment, and the filter assembly includes a debris catch tray disposed at the second axial end, the debris catch tray having a debris ejection slot aligned with and communicating with the at least one debris ejection slot extension for ejecting the debris from the inner space of the separator chamber housing to the surrounding environment, characterised in that: the debris catch tray includes a plurality of filter alignment ridges provided on an outer circumferential surface of the debris catch tray, the separator chamber housing includes a plurality of filter alignment grooves formed on an inner surface of the separator chamber housing, and the filter alignment ridges are configured to mate with the filter alignment grooves such that the debris ejection slot aligns with the at least one debris ejection slot extension. the debris catch tray includes a plurality of filter alignment ridges provided on an outer circumferential surface of the debris catch tray, the separator chamber housing includes a plurality of filter alignment grooves formed on an inner surface of the separator chamber housing, and