Flexible duct with interchangeable end, connector for flexible duct, and method thereof

A method of using a flexible duct comprising:

• providing a flexible duct including
• a hollow tube shape;
• at least one end;
• a first circumferential attachment integral to the at least one end;
• a second circumferential attachment integral to the at least one end,
• wherein the first circumferential attachment and the second circumferential attachment are different,
• wherein the at least one end has a first configuration in which the first circumferential attachment integral to the at least one end is positioned to independently mechanically couple the at least one end around a first inlet or a first outlet and a second configuration in which the second circumferential attachment integral to the at least one end is positioned to independently mechanically couple the at least one end around the first inlet or the first outlet, and
• wherein the first configuration and the second configuration are different;
• selecting one of the first circumferential attachment or the second circumferential attachment;
• and
• mechanically coupling the selected first circumferential attachment or second circumferential attachment around the first inlet or first outlet.

A connector for a flexible duct comprising:

• a hollow tube shape extending between a first connector end and a second connector end;
• a first circumferential attachment integral to the first connector end;
• a second circumferential attachment integral to the first connector end,
• wherein the second connector end is configured to be affixed to a flexible duct end of the flexible duct such that an opening extends through the connector and flexible duct,
• wherein the first circumferential attachment and the second circumferential attachment are different,
• wherein the connector has a first configuration in which the first circumferential attachment integral to the first connector end is positioned to independently mechanically couple the first connector end around a first inlet or a first outlet and a second configuration in which the second circumferential attachment integral to the first connector end is positioned to independently mechanically couple the first connector end around the first inlet or the first outlet, and
• wherein the first configuration and the second configuration are different.