Abstract: An interchangeable duct seal is provided. The interchangeable duct seal includes a first panel, the first panel having a first support structure and a first material attached to the first support structure; and a brace configured for securing the first panel to a structure; wherein the first panel includes a first opening and is configured to connect to a first duct and/or allow the first duct to pass through the interchangeable duct seal. The interchangeable duct seal may also include a second panel or multiple panels. Related kits and methods are also provided.

Abstract: A flexible duct includes a hollow tube shape, at least one end, a first circumferential attachment and a second circumferential attachment integral to the at least one end, wherein the first circumferential attachment and the second circumferential attachment are each configured to independently mechanically couple the at least one end around a first inlet or a first outlet, and wherein the first circumferential attachment and the second circumferential attachment are different. A method includes providing a flexible duct, selecting one of the first circumferential attachment or second circumferential attachment of the flexible duct, and mechanically coupling the selected first circumferential attachment or second circumferential attachment around the first inlet or first outlet.