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A sealing gasket assembly for sealing a head-of-wall construction including a member body having a top member with first and second spaced apart side panels depending from the top member. The intersection of the first side panel and the top member defines a first inside corner and a first outside co

A sealing gasket assembly for sealing a head-of-wall construction including a member body having a top member with first and second spaced apart side panels depending from the top member. The intersection of the first side panel and the top member defines a first inside corner and a first outside corner and the intersection of the second side panel and the top member defines a second inside corner and a second outside corner. A supplemental sealing member extends along each of the first and second outside corners. Each supplemental sealing member is manufactured from a flexible material and is configured such that a panel abutment portion thereof extends along at least a portion of an outside surface of the respective side panel and a return portion extends along at least a portion of an outside surface of the top member.

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1. A sealing gasket assembly for sealing a head-of-wall construction, the wall construction including a ceiling track secured relative to a floor underside and supporting a plurality of studs, the gasket assembly comprising: a member body including a top member with first and second spaced apart sid

1. A sealing gasket assembly for sealing a head-of-wall construction, the wall construction including a ceiling track secured relative to a floor underside and supporting a plurality of studs, the gasket assembly comprising: a member body including a top member with first and second spaced apart side panels depending from the top member and defining an opening configured to receive the ceiling track within the member body, the intersection of the first side panel and the top member defining a first inside corner and a first outside corner and the intersection of the second side panel and the top member defining a second inside corner and a second outside corner; anda supplemental sealing member extending along each of the first and second outside corners, each supplemental sealing member manufactured from a flexible material and configured such that a panel abutment portion thereof extends along at least a portion of an outside surface of the respective side panel and a return portion extends along at least a portion of an outside surface of the top member, wherein a lip extends outwardly from each return portion at an acute angle relative to the top member. 2. The sealing gasket assembly according to claim 1 wherein the panel abutment portion, the return portion and the lip are formed integrally. 3. The sealing gasket assembly according to claim 1 wherein the member body and the supplemental sealing members are manufactured from different materials. 4. The sealing gasket assembly according to claim 3 wherein the member body is manufactured from a material having a greater rigidity than that of the supplemental sealing members. 5. The sealing assembly according to claim 3 wherein the supplemental sealing members are manufactured integrally with the member body. 6. The sealing assembly according to claim 3 wherein the supplemental sealing members are manufactured separately from the member body and secured thereto. 7. The sealing gasket assembly according to claim 1 wherein member body has an axial length and each of the supplemental sealing members extends over the axial length. 8. The sealing assembly according to claim 1 further comprising a firestopping member, manufactured from a firestopping material, positioned in each of the first and second inside corners. 9. The sealing assembly according to claim 8 wherein the firestopping material is an intumescent material. 10. The sealing assembly according to claim 8 wherein the firestopping material is an intumescent sheet material. 11. The sealing assembly according to claim 8 wherein each firestopping member is configured such that a panel abutment portion thereof extends along at least a portion of an inside surface of the respective side panel and a return portion extends along at least a portion of an inside surface of the top member. 12. The sealing assembly according to claim 11 wherein a pair of lips extend inwardly from the top member, with each lip configured to engage a respective firestopping member return portion to retain the firestopping member in position. 13. A sealing gasket assembly for sealing a head-of-wall construction, the wall construction including a ceiling track secured relative to a floor underside and supporting a plurality of studs, the gasket assembly comprising: a member body including a top member with first and second spaced apart side panels depending from the top member and defining an opening configured to receive the ceiling track within the member body, the intersection of the first side panel and the top member defining a first inside corner and a first outside corner and the intersection of the second side panel and the top member defining a second inside corner and a second outside corner;a supplemental sealing member extending along each of the first and second outside corners, each supplemental sealing member manufactured from a flexible material and configured such that a panel abutment portion thereof extends along at least a portion of an outside surface of the respective side panel and a return portion extends along at least a portion of an outside surface of the top member, wherein a lip extends outwardly from each supplemental sealing member return portion at an acute angle relative to the top member; anda firestopping member, manufactured from a firestopping material, positioned in each of the first and second inside corners. 14. The sealing gasket assembly according to claim 13 wherein the member body and the supplemental sealing members are manufactured from different materials. 15. The sealing gasket assembly according to claim 14 wherein the member body is manufactured from a material having a greater rigidity than that of the supplemental sealing members. 16. The sealing assembly according to claim 13 wherein the firestopping material is an intumescent material. 17. The sealing assembly according to claim 13 wherein the firestopping material is an intumescent sheet material. 18. A sealing gasket assembly for sealing a head-of-wall construction, the wall construction including a ceiling track secured relative to a floor underside and supporting a plurality of studs, the gasket assembly comprising: a member body including a top member with first and second spaced apart side panels depending from the top member and defining an opening configured to receive the ceiling track within the member body, the intersection of the first side panel and the top member defining a first inside corner and a first outside corner and the intersection of the second side panel and the top member defining a second inside corner and a second outside corner;a supplemental sealing member extending along each of the first and second outside corners, each supplemental sealing member manufactured from a flexible material and configured such that a panel abutment portion thereof extends along at least a portion of an outside surface of the respective side panel and a return portion extends along at least a portion of an outside surface of the top member; anda firestopping member, manufactured from a firestopping material, positioned in each of the first and second inside corners, wherein each firestopping member is configured such that a panel abutment portion thereof extends along at least a portion of an inside surface of the respective side panel and a return portion extends along at least a portion of an inside surface of the top member. 19. The sealing gasket assembly according to claim 18, wherein a lip extends outwardly from each supplemental sealing member return portion at an acute angle relative to the top member. 20. The sealing gasket assembly according to claim 19, wherein the panel abutment portion, the return portion and the lip are formed integrally. 21. The sealing gasket assembly according to claim 18, wherein the member body and the supplemental sealing members are manufactured from different materials. 22. The sealing gasket assembly according to claim 21 wherein the member body is manufactured from a material having a greater rigidity than that of the supplemental sealing members. 23. The sealing assembly according to claim 21 wherein the supplemental sealing members are manufactured integrally with the member body. 24. The sealing assembly according to claim 21 wherein the supplemental sealing members are manufactured separately from the member body and secured thereto. 25. The sealing gasket assembly according to claim 18 wherein member body has an axial length and each of the supplemental sealing members extends over the axial length. 26. The sealing assembly according to claim 18 wherein the firestopping material is an intumescent material. 27. The sealing assembly according to claim 18 wherein the firestopping material is an intumescent sheet material. 28. The sealing assembly according to claim 18 wherein a pair of lips extend inwardly from the top member, with each lip configured to engage a respective firestopping member return portion to retain the firestopping member in position.