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A removable exhaust treatment unit for an aftertreatment assembly is provided. The removable exhaust treatment unit include a housing, at least one exhaust treatment element coupled within the housing, and a flange on one end of the housing. The removable exhaust treatment unit also includes a plura

A removable exhaust treatment unit for an aftertreatment assembly is provided. The removable exhaust treatment unit include a housing, at least one exhaust treatment element coupled within the housing, and a flange on one end of the housing. The removable exhaust treatment unit also includes a plurality of apertures on the flange configured to receive a plurality of fasteners. The removable exhaust treatment unit further includes at least one handle coupled to the flange.

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1. A removable exhaust treatment unit for an aftertreatment assembly, comprising: a housing;at least one exhaust treatment element coupled within the housing;a flange on one end of the housing;a plurality of apertures on the flange configured to receive a plurality of fasteners; andat least one hand

1. A removable exhaust treatment unit for an aftertreatment assembly, comprising: a housing;at least one exhaust treatment element coupled within the housing;a flange on one end of the housing;a plurality of apertures on the flange configured to receive a plurality of fasteners; andat least one handle coupled to the flange, the at least one handle extending inward from a perimeter of the flange and overlapping a portion of the at least one exhaust treatment element wherein the exhaust treatment unit is removable from an enclosure, and the flange is disposed within the enclosure and coupled to an inner support portion of the enclosure. 2. The removable exhaust treatment unit of claim 1, wherein the at least one handle includes a plurality of handles coupled to the flange. 3. The removable exhaust treatment unit of claim 1, wherein the housing is cylindrical. 4. The removable exhaust treatment unit of claim 1, wherein the at least one exhaust treatment element is selected from the group consisting of a diesel particulate filter, a NOx treatment component, a SOx treatment component, and a catalyst. 5. The removable exhaust treatment unit of claim 1, wherein the at least one exhaust treatment element is a filter substrate. 6. The removable exhaust treatment unit of claim 5, wherein the filter substrate is removable from the housing. 7. An engine system, comprising: an internal combustion engine configured to combust air and fuel to produce exhaust gases;a first exhaust conduit;a second exhaust conduit; andan emissions control filter assembly, including: an enclosure defining an interior and including an inlet, an outlet, and an opening, wherein the inlet is connected with the first exhaust conduit and configured to receive a flow of exhaust gases from the first exhaust conduit;the outlet is connected with the second exhaust conduit and configured to direct the flow of exhaust gases to the second exhaust conduit; andthe opening is configured to provide access to the interior;a cover portion spaced from the outlet and removably coupled with the enclosure, and configured to cover the opening and prevent the flow of exhaust gases from flowing through the opening; anda removable exhaust treatment unit disposed within the interior of the enclosure and removably coupled with the enclosure, the removable exhaust treatment unit configured to contain at least one exhaust treatment element and to be removable through the opening when the cover portion is removed, wherein the outlet is included in a wall forming an outer perimeter of the enclosure, the outlet disposed between the cover portion and the exhaust treatment element. 8. The engine system of claim 7, wherein the outlet of the enclosure is located on a circumferential side surface portion of the enclosure adjacent the cover portion. 9. The engine system of claim 7, wherein the removable exhaust treatment unit further includes a flange removably coupled with an annular support portion protruding inwardly from an interior surface of the enclosure. 10. The engine system of claim 9, wherein the removable exhaust treatment unit further includes at least one handle coupled with the flange. 11. The engine system of claim 7, wherein the at least one exhaust treatment element is selected from the group consisting of a diesel particulate filter, a NOx treatment component, a SOx treatment component, and a catalyst. 12. The engine system of claim 7, wherein the emissions control filter assembly further includes an annular flow director extending from an inlet end of the removable exhaust treatment unit to an interior surface of the enclosure. 13. The engine system of claim 12, wherein the flow director is configured to seal a space formed between the enclosure and the removable exhaust treatment unit, and to direct the flow of exhaust gases from a chamber of the enclosure into the inlet end of the removable exhaust treatment unit. 14. An emissions control filter assembly, comprising: an enclosure defining an interior and including an inlet, an outlet, and an opening configured to provide access to the interior;a cover portion removably coupled with the enclosure and configured to cover the opening; anda removable exhaust treatment unit disposed within the interior of the enclosure and removably coupled with the enclosure, the removable exhaust treatment unit including: a housing;at least one exhaust treatment element coupled within the housing;a flange on one end of the housing and disposed within the interior of the enclosure;a plurality of apertures on the flange configured to receive a plurality of fasteners; andat least one handle coupled to the flange. 15. The emissions control filter assembly of claim 14, wherein the outlet of the enclosure is located on a circumferential side surface of the enclosure adjacent the cover portion. 16. The emissions control filter assembly of claim 14, wherein the at least one handle includes a plurality of handles coupled to the flange. 17. The emissions control filter assembly of claim 14, wherein the at least one exhaust treatment element is a filter substrate. 18. The emissions control filter assembly of claim 14, wherein the at least one exhaust treatment element is selected from the group consisting of a diesel particulate filter, a NOx treatment component, a SOx treatment component, and a catalyst. 19. The emissions control filter assembly of claim 14, further including an annular flow director extending from an inlet end of the removable exhaust treatment unit to an interior surface of the housing, the flow director configured to seal a space formed between the housing and the removable exhaust treatment unit, and to direct exhaust gas from a chamber of the housing into the inlet end of the removable exhaust treatment unit. 20. A method of providing an emissions control filter assembly, comprising: providing a removable exhaust treatment unit;securing an exhaust treatment element to the removable exhaust treatment unit;providing an enclosure;removably coupling a flange of the removable exhaust treatment unit with an annular support portion protruding inwardly from an interior surface of the enclosure, wherein removing the exhaust treatment unit from the enclosure comprises moving the flange across an exhaust outlet of the enclosure;providing an opening in the enclosure to give access to the removable exhaust treatment unit; andproviding a removable cover portion for the opening. 21. The removable exhaust treatment unit of claim 1, wherein the at least one handle extends across an outlet of the at least one exhaust treatment element from a first location on the perimeter to a second location on the perimeter different than the first location. 22. The removable exhaust treatment unit of claim 1, further including a layer of mating material disposed between the housing and the at least one exhaust treatment element. 23. The engine system of claim 7, wherein no particulate matter is removed from the flow of exhaust gases between the inlet of the enclosure and an inlet of the at least one exhaust treatment element. 24. The engine system of claim 7, wherein an inlet of the second exhaust conduit is coupled to the outlet of the enclosure. 25. The engine system of claim 7, wherein the outlet is disposed between a flange of the exhaust treatment unit and the cover portion. 26. The engine system of claim 7, wherein the outlet is disposed between a flange of the exhaust treatment unit and the opening of the enclosure. 27. The removable exhaust treatment unit of claim 1, wherein the exhaust treatment unit is removable from an enclosure, the at least one handle being disposed within the enclosure. 28. The engine system of claim 7, wherein the outlet comprises an opening in the wall forming the outer perimeter of the enclosure, the cover portion contacting the wall.