Abstract: An embodiment includes a transparent sash mounted integral to the perforated doors on racks which hold computer servers typically installed in data centers. The racks are arrayed in rows forming cold aisles and hot aisles. Cooled air introduced into the cold aisle flows through the racks and cools the servers, and subsequently is removed from the hot aisle. Embodiment sashes slide vertically and extend above the tops of the racks and form a sealing relationship with the data center ceiling and adjacent sashes, thereby preventing wasteful mixing and recirculation of cooled and heated air over the tops of the racks. Embodiments are raised and lowered manually or automatically. The controls for the movement of the sashes are tied to the building automation and fire alarm systems and the sashes are lowered automatically upon activation of the data center fire suppression system, thereby complying with code requirements and avoiding interference with the fire sprinkler and suppression systems.

Abstract: An embodiment includes a transparent sash mounted integral to the perforated doors on racks which hold computer servers typically installed in data centers. The racks are arrayed in rows forming cold aisles and hot aisles. Cooled air introduced into the cold aisle flows through the racks and cools the servers, and subsequently is removed from the hot aisle. Embodiment sashes slide vertically and extend above the tops of the racks and form a sealing relationship with the data center ceiling and adjacent sashes, thereby preventing wasteful mixing and recirculation of cooled and heated air over the tops of the racks. Embodiments are raised and lowered manually or automatically. The controls for the movement of the sashes are tied to the building automation and fire alarm systems and the sashes are lowered automatically upon activation of the data center fire suppression system, thereby complying with code requirements and avoiding interference with the fire sprinkler and suppression systems.