A bracket for coupling two or more frame members to one another, the bracket comprising: a structural portion comprising at least one first material; a sealing portion comprising at least one second material; wherein the at least one first material is relatively more rigid than the at least one second material, and the at least one second material is relatively more elastic than the at least one first material; a first receiver defining a first longitudinal axis and configured to receive an end of a first frame member, the first receiver comprising: a first retainer portion configured to be coupled to the end of the first frame member; and a first sealing interface configured to provide a substantially fluid-resistant seal between a portion of the end of the first frame member and the first receiver; a second receiver defining a second longitudinal axis substantially parallel to the first longitudinal axis of the first receiver and configured to receive an end of a second frame member, the second receiver comprising: a second retainer portion configured to be coupled to the end of the second frame member; and a second sealing interface configured to provide a substantially fluid-resistant seal between a portion of the end of the second frame member and the second receiver, wherein the structural portion comprises the first retainer portion and the second retainer portion, and wherein the sealing portion comprises the first sealing interface and the second sealing interface; wherein the first retainer portion comprises: a first attachment portion presenting an abutment surface facing a direction transverse to the first longitudinal axis of the first receiver; and one or more holes extending through the first attachment portion configured to receive one or more fasteners configured to secure the end of the first frame member to the first retainer portion; wherein a central region of the bracket defines a recess configured to receive therein an edge of at least one door panel. a structural portion comprising at least one first material; a sealing portion comprising at least one second material; wherein the at least one first material is relatively more rigid than the at least one second material, and the at least one second material is relatively more elastic than the at least one first material; a first receiver defining a first longitudinal axis and configured to receive an end of a first frame member, the first receiver comprising: a first retainer portion configured to be coupled to the end of the first frame member; and a first sealing interface configured to provide a substantially fluid-resistant seal between a portion of the end of the first frame member and the first receiver; a first retainer portion configured to be coupled to the end of the first frame member; and a first sealing interface configured to provide a substantially fluid-resistant seal between a portion of the end of the first frame member and the first receiver; a second receiver defining a second longitudinal axis substantially parallel to the first longitudinal axis of the first receiver and configured to receive an end of a second frame member, the second receiver comprising: a second retainer portion configured to be coupled to the end of the second frame member; and a second retainer portion configured to be coupled to the end of the second frame member; and a second sealing interface configured to provide a substantially fluid-resistant seal between a portion of the end of the second frame member and the second receiver, wherein the structural portion comprises the first retainer portion and the second retainer portion, and wherein the sealing portion comprises the first sealing interface and the second sealing interface; wherein the first retainer portion comprises: a first attachment portion presenting an abutment surface facing a direction transverse to the first longitudinal axis of the first receiver; and one or more holes extending through the first attachment portion configured to receive one or more fasteners configured to secure the end of the first frame member to the first retainer portion; wherein a central region of the bracket defines a recess configured to receive therein an edge of at least one door panel. a first attachment portion presenting an abutment surface facing a direction transverse to the first longitudinal axis of the first receiver; and one or more holes extending through the first attachment portion configured to receive one or more fasteners configured to secure the end of the first frame member to the first retainer portion; wherein a central region of the bracket defines a recess configured to receive therein an edge of at least one door panel.