An endograft device for endovascular repair of ascending aortic aneurysms, comprising: a first prosthetic component; and a second prosthetic component; the first prosthetic component comprising: a proximal frame with an outer surface that is covered with a nonporous covering material such that fluid is prevented from passing therethrough, and a self-expanding elongated distal frame secured to a distal end of the proximal frame, wherein the self-expanding elongated distal frame extends to a distal end of the first prosthetic component, wherein the self-expanding elongated distal frame comprises an open-cell configuration that is uncovered such that fluid is permitted to pass through an opening formed therein, wherein the distal frame is configured to permit the accurate deployment of the first prosthetic component without compromising the circulation to supra-aortic branches and to allow for cannulation of a supra-aortic branch for placement of a branch arch device, wherein the self-expanding elongated distal frame is configured to span the supra-aortic arteries of the aortic arch when delivered to the patient; the second prosthetic component comprising: a frame that extends from a proximal end to a distal end; wherein the first prosthetic component is configured to, when implanted in a patient's aorta, extend distally into an arch of the patient's aorta; wherein the first prosthetic component is configured to be deployed such that the distal end of the proximal frame is positioned proximal to the innominate artery; wherein a distal end of the second prosthetic component is configured to be secured to the proximal frame of the first prosthetic component after the first prosthetic component has been implanted in a patient's aorta. a first prosthetic component; and a second prosthetic component; the first prosthetic component comprising: a proximal frame with an outer surface that is covered with a nonporous covering material such that fluid is prevented from passing therethrough, and a self-expanding elongated distal frame secured to a distal end of the proximal frame, wherein the self-expanding elongated distal frame extends to a distal end of the first prosthetic component, wherein the self-expanding elongated distal frame comprises an open-cell configuration that is uncovered such that fluid is permitted to pass through an opening formed therein, wherein the distal frame is configured to permit the accurate deployment of the first prosthetic component without compromising the circulation to supra-aortic branches and to allow for cannulation of a supra-aortic branch for placement of a branch arch device, wherein the self-expanding elongated distal frame is configured to span the supra-aortic arteries of the aortic arch when delivered to the patient; a proximal frame with an outer surface that is covered with a nonporous covering material such that fluid is prevented from passing therethrough, and a self-expanding elongated distal frame secured to a distal end of the proximal frame, wherein the self-expanding elongated distal frame extends to a distal end of the first prosthetic component, wherein the self-expanding elongated distal frame comprises an open-cell configuration that is uncovered such that fluid is permitted to pass through an opening formed therein, wherein the distal frame is configured to permit the accurate deployment of the first prosthetic component without compromising the circulation to supra-aortic branches and to allow for cannulation of a supra-aortic branch for placement of a branch arch device, wherein the self-expanding elongated distal frame is configured to span the supra-aortic arteries of the aortic arch when delivered to the patient; the second prosthetic component comprising: a frame that extends from a proximal end to a distal end; wherein the first prosthetic component is configured to, when implanted in a patient's aorta, extend distally into an arch of the patient's aorta; wherein the first prosthetic component is configured to be deployed such that the distal end of the proximal frame is positioned proximal to the innominate artery; wherein a distal end of the second prosthetic component is configured to be secured to the proximal frame of the first prosthetic component after the first prosthetic component has been implanted in a patient's aorta.