Adjustable header for sliding doors and windows

1. A header, comprising:

a first header piece;

a second header piece, attachable to the first header piece; and

an extender provided between the first header piece and the second header piece,

wherein the first header piece and the second header piece are mirror images of each other and are connected by a connector,

wherein the header is disposed horizontally above a window or a door,

wherein a cantilevered flange of the first header piece is extended towards the second header piece,

wherein, in a direction from the first header piece to the second header piece, a length of the cantilevered flange is greater than a length of the connector,

wherein the first header piece and the second header piece are each substantially L-shaped,

wherein the cantilevered flange is cantilevered from an upper corner of the substantially L-shaped shape of the first header piece above the window or the door,

wherein the first header piece and the second header piece are coupled to a plurality of inner tracks therebetween,

wherein each of the inner tracks is coupled to a respective one of a plurality of panels,

wherein the header simultaneously accommodates the plurality of panels therein between the first header piece and the second header piece,

wherein, in the direction from the first header piece to the second header piece, the connector does not overlap any portion of the panels,

wherein the header comprises an adjustment piece extended from at least one of the inner tracks to at least one of the first header piece and the second header piece,

wherein the inner tracks are configured to be deflected relative to the header and along the adjustment piece,

wherein the first header piece is attached to a first side of the extender by the connector, and

wherein the second header piece is attached to a second side of the extender, opposite the first side, by another connector.

2. The header of claim 1 , wherein the first header piece and the second header piece each include a first side and a second side, the first side being essentially orthogonal to the second side.

3. The header of claim 2 , wherein at least one of the first header piece and the second header piece includes a protrusion on at least one of the first side and the second side, the protrusion being configured to receive or support a crosspiece for deflecting top-hung tracks or floor tracks.

4. The header of claim 3 , wherein the crosspiece is a bar configured to rest on the protrusion.

5. The header of claim 2 , wherein at least one of the first header piece and the second header piece does not include a protrusion on either the first side or the second side.

6. The header of claim 1 , wherein the first header piece and the second header piece each include at least one protrusion which is configured to receive or support the connector.

7. The header of claim 1 , wherein the connector is modular.

8. The header of claim 1 , wherein the header supports a window frame or a door frame.

9. The header of claim 3 , wherein the header is configured to support an elastic component that is disposed in a vertical direction between the header and the crosspiece.

10. The header of claim 1 , wherein the first header piece and the second header piece are connected by a plurality of connectors, including the connector, and are configured to be separable from each other by removal of the connectors.

11. A header, comprising:

a first header piece; and

a second header piece, attachable to the first header piece,

an extender provided between the first header piece and the second header piece,

wherein the first header piece and the second header piece are mirror images of each other and are connected by a connector,

wherein the header is disposed horizontally above a window or a door,

wherein a portion of the first header piece is extended towards the second header piece,

wherein, in a direction from the first header piece to the second header piece, a length of the portion is greater than a length of the connector,

wherein the first header piece and the second header piece are each substantially L-shaped,

wherein the first header piece is attached to a first side of the extender by the connector, and

the second header piece is attached to a second side of the extender, opposite the first side, by another connector.