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A 19-inch rack is a standardized frame or enclosure for mounting computer equipment modules. Each module has a front panel that is 19 inches (480 mm) wide, including edges or ears that protrude on each side which allow the module to be fastened to the rack frame with screws.
Racks are available with either four or two vertical rails. Four-post racks allow for mounting slides to support the equipment at the front and rear. These racks may be open in construction or enclosed by doors, side panels and tops. Two-post racks provide just two vertical rails; a piece of equipment can be mounted either via its front panel holes, or close to its center of gravity to minimize load on its front panel. Two-post racks are most often used for telecommunication installations.
A rack unit or U (less commonly, RU) is a unit of measure used to describe the height of equipment intended for mounting in a 19-inch rack. The 19 inch dimension refers to the width of the equipment that can be mounted inside the rack. One rack unit is more commonly written as "1U" and 1.75 inches (44.45 mm)high. Similarly, 2 rack units are "2U" and so on.
Whether you're doing new installations or upgrading your existing infrastructure, Warehouse Cables has the rack equipment you need, at an affordable price.
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Kendall Howard is a long-time manufacturer of rackmount equipment popular for its solid construction and innovative designs.
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