Patent ID: 8223492

Claim:
A horizontal subrack, wherein the horizontal subrack comprises a ventilation box, a fan box, and a board area, wherein the ventilation box is located on the top and at the bottom of the board area, and includes an air partition plate, an air inlet, and a first air outlet; the air partition plate is set inside the ventilation box, and divides the ventilation box into an air-in chamber and an air-out chamber; the fan box is set in the air-in chamber, and a fan is installed on the fan box; the air inlet is set on the front wall of the ventilation box, and is located in the air-in chamber; the first air outlet is set on the rear wall of the ventilation box, and is located in the air-out chamber; the board area comprises board slots, an air-in duct, and an air-out duct, the air-in duct is located on one side of the board slots, the air-out duct is located on the other side of the board slots, the air-in duct is linked to the air-in chamber, and the air-out duct is linked to the air-out chamber.