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

1. A flexible duct comprising:

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.

2. The flexible duct of claim 1 , wherein one of the first circumferential attachment or second circumferential attachment is removeable from the flexible duct.

3. The flexible duct of claim 2 , wherein the one of the first circumferential attachment or second circumferential attachment includes a zipper that can be unzipped to disconnect the one of the first circumferential attachment or second circumferential attachment from the flexible duct.

4. The flexible duct of claim 1 , including an end portion of the at least one end having an internally extending circumferential projection slidably fixed between a first outwardly extending circumferential projection on the flexible duct and a second outwardly extending circumferential projection on the flexible duct,

wherein the internally extending circumferential projection is slidable to the first outwardly extending circumferential projection such that the first circumferential attachment is mechanically couplable around the first inlet or first outlet,

wherein internally extending circumferential projection is slidable to the second outwardly extending circumferential projection such that the second circumferential attachment is mechanically couplable around the first inlet or first outlet.

5. The flexible duct of claim 1 , wherein an end portion of the at least one end that includes the second circumferential attachment is configured to fold or roll backwards onto the flexible duct such that the first circumferential attachment is mechanically couplable around the first inlet or first outlet.

6. The flexible duct of claim 1 , wherein at least one of the first circumferential attachment or second circumferential attachment includes a rigid hoop configured to be placed around and to compress around the first inlet or first outlet.

7. The flexible duct of claim 1 , wherein at least one of the first circumferential attachment or second circumferential attachment includes a strap configured to tighten the at least one of the first circumferential attachment and second circumferential attachment around the first inlet or first outlet.

8. The flexible duct of claim 1 , wherein an end portion of the at least one end includes a collapsible accordion structure including the first circumferential attachment, wherein the collapsible accordion structure is configured to extend such that the first circumferential attachment is mechanically couplable to the first inlet or second inlet, and wherein the collapsible accordion structure is configured to collapse such that the second circumferential attachment is mechanically couplable around the first inlet or first outlet.

9. The flexible duct of claim 1 , wherein a second end of the flexible duct includes a third circumferential attachment integral to the second end and a fourth circumferential attachment integral to the second end,

wherein the second circumferential attachment and the third circumferential attachment are each configured to independently mechanically couple the second end around the first inlet or a first outlet, and

wherein the third circumferential attachment and the fourth circumferential attachment are different.

10. 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.

11. 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.

12. The connector for the flexible duct of claim 11 , wherein the connector is affixed to the flexible duct.

13. The connector for the flexible duct of claim 11 , wherein the second connector end includes a rigid hoop configured to be placed around the flexible duct end to connect the connector to the flexible duct.

14. The connector for the flexible duct of claim 13 , wherein the flexible duct end includes a second rigid hoop, wherein the rigid hoop of the second connector end of the connector is configured to be placed around the second rigid hoop to connect the connector to the flexible duct.

15. The connector for the flexible duct of claim 11 , wherein the second connector end of the connector includes an elastic ring configured to stretch around the flexible duct end to connect the connector to the flexible duct.

16. A method comprising:

providing the connector for the flexible duct of claim 11 ;

affixing the second connector end to the flexible duct;

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.