Rack mount depth is commonly confused with the overall rack depth including the door. Mounting depth is defined as the dimension from the front of the front rack angle to the back of the back rack angle. Many racks have adjustable mounting depth so it’s best practice to ensure that the rails being used for Read More ›

EIA stands for the Electronic Industries Association. EIA-310 is a specification for the “standard rack”. This specification standardizes several important features of 19″ racks, such as the Rack Unit (RU or U), vertical hole spacing, horizontal hole spacing, rack opening and front panel width. The specification also sets tolerances on each of these dimensions. The Read More ›

The horizontal spacing of the vertical rows of holes is specified by EIA-310 at 18 5/16″ (18.312″ or 465.1 mm). However, many manufacturers use equipment mounting slots instead of holes to allow for variations in this dimension.

A filler or blanking panel is a flat piece of metal or plastic that matches the height of one or more rack units (1U is equivalent to 1.75″). Typical sizes range from 1-8 rack units. Filler or blanking panels are used to close openings that are not being used in a rack enclosure. This helps Read More ›

A fixed rail is a long L-shaped bracket that supports the edge of the equipment. Fixed rails serve as an alternative to sliding or telescoping rails, which are sometimes too large to fit within a rack. They may include a cabling crossbar in the rear to dress out any cables present. It’s important to note Read More ›