Modular air-duct assembly for a server

A kit of components for constructing an air-duct assembly for a server, comprising:

• a main portion having a first end region and a second end region, the main portion receiving air from a fan within the server at the first end region and guiding the air toward the second end region;
• a first extension piece that is attachable to the second end region of the main portion, the first extension piece guiding the air from the second end region of the main portion to a terminal end of the first extension piece, the first extension piece having a first size that accommodates a first heat exchanger to be placed within the server;
• and
• a second extension piece that is attachable to the second end region of the main portion, the second extension piece guiding the air from the second end region of the main portion to a terminal end of the second extension piece, the second extension piece having a second size that accommodates a second heat exchanger to be placed within the server, the second size being different from the first size.

A server, comprising:

• a chassis having a base and side walls extending upwardly from the base;
• a first electronic component within the chassis that is in thermal communication with a heat exchanger for removing heat from the first electronic component;
• at least one fan for moving air within the chassis;
• and
• an air-duct assembly within the chassis that defines an air passage that guides the air from the fan to move across the heat exchanger, the air-duct assembly comprising a main portion and a first extension piece, the first extension piece being located over the heat exchanger, the main portion including a slot and the first extension piece including an arm that slides within the slot, the arm including a hook allowing the first extension piece to be detachably attached to the main portion via a snap-fit connection, the main portion includes a projecting tab that projects away from the main portion in a direction of airflow, the main portion includes support surfaces adjacent to the projecting tab, the first extension piece includes an opening for receiving the projecting tab, the support surfaces for engaging the first extension piece;
• and
• wherein, in response to the first extension piece being detached from the main portion, a second extension piece is capable of being detachably attached to the main portion of the air-duct assembly.