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2. 19-inch rack - Wikipedia

   en.wikipedia.org/wiki/19-inch_rack

   The 19-inch (482.6 mm) standard rack arrangement is widely used throughout the telecommunications, computing, audio, video, entertainment and other industries, though the Western Electric 23-inch standard, with holes on 1-inch (25.4 mm) centers, is still used in legacy ILEC / CLEC facilities. Nineteen-inch racks in two-post or four-post form ...

3. Rack unit - Wikipedia

   en.wikipedia.org/wiki/Rack_unit

   Rack with sample component sizes including an A/V half-rack unit. A rack unit (abbreviated U or RU) is a unit of measure defined as 1 + 3 ⁄ 4 inches (44.45 mm). [1] [2] It is most frequently used as a measurement of the overall height of 19-inch and 23-inch rack frames, as well as the height of equipment that mounts in these frames, whereby the height of the frame or equipment is expressed ...

4. Photovoltaic mounting system - Wikipedia

   en.wikipedia.org/wiki/Photovoltaic_mounting_system

   Photovoltaic mounting systems (also called solar module racking) are used to fix solar panels on surfaces like roofs, building facades, or the ground. [1] These mounting systems generally enable retrofitting of solar panels on roofs or as part of the structure of the building (called BIPV). [2] As the relative costs of solar photovoltaic (PV ...

5. These Are the Ski and Snowboard Racks the Pros Swear by - AOL

   www.aol.com/ski-snowboard-racks-pros-swear...

   Most racks and cargo boxes require crossbars for mounting; make sure you get the right ones to fit both your vehicle and to properly mount whichever ski and snowboard carrier you choose. Build Quality

6. Rack and pinion - Wikipedia

   en.wikipedia.org/wiki/Rack_and_pinion

   Rack and pinion. A rack and pinion is a type of linear actuator that comprises a circular gear (the pinion) engaging a linear gear (the rack). [1] Together, they convert between rotational motion and linear motion: rotating the pinion causes the rack to be driven in a line. Conversely, moving the rack linearly will cause the pinion to rotate.

7. Rack rail - Wikipedia

   en.wikipedia.org/wiki/Rack_rail

   Rack rail. Not to be confused with Rack railway. A rack rail, or rack strip, is used to mount rackable electronic hardware and 19-inch rack mount accessories within a 19-inch rack. [1] Within a rack a minimum of two rack rails are required to mount equipment. The height of rack rail is determined by the number of rack units required for ...