Hoffman E4DR19FM51U 19 Inch 8 Foot 51-Rack Unit 4-Post LAN Open Frame Rack
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Manufacturer Hoffman Engineering
Mfg Catalog # E4DR19FM51U
North Coast Part # 600299


  • Depth adjustable 450 mm to 1050 mm (17.7 inch to 41.3 inch) in 25-mm (.98-inch) increments
  • EIA universal 5/8 - 5/8 - 1/2 inch spaced 12-24 tapped holes or .375-inch square holes fit 19-inch rack equipment
  • Compatible with 19-in. rack accessories
  • Available with nominal frame height of 6, 7 and 8 feet
  • RU markings on both front and back of tapped-hole uprights make it easier to mount equipment
  • Floor mounting holes predrilled at .750-inch diameter
  • 12-24 rack mounting screws (pkg. of 20) included with tapped-hole model
  • For square hole model, order screws and cage nuts separately
  • Can be ganged with both 2- and 4-Post Open Frame racks
  • Includes complete assembly instructions


  • Height (H) (inch): 96
  • Height (H) (millimetre): 2,438
  • Width (W) (inch): 20.25
  • Width (W) (millimetre): 514
  • Material: Aluminum
  • Mounting Hole Type: Tapped
  • Rack Units: 51
  • Nominal Frame Height (A) (foot): 8
  • Modification Services: Yes
  • Color: Jet Black
  • Color Code: RAL 9005
  • Finish: Powder Coated
  • Thickness (T) (gauge): 0.14
  • Thickness (T) (millimetre): 3.5

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UPC 78351010012
Item Long Description 4-Post Open Frame Racks combine the mounting security of a cabinet with the accessibility of a rack. Used in communication data center and telecommunication room applications, these adjustable-depth racks support deeper, heavier network equipment and can be ganged with standard 2-post or other 4-post racks to expand existing systems.
GTiN 00783510100124
Finish Powder Coated
Width 20.25 in
Color Black
Type Open Frame Racks
Material Aluminum
Applications Networking, Storage and Data Center
Height 96 in
Standard CUL Listed Per CSA C22.2 No. 182.4; File No. E230874,EIA 310-D,UL 2416 Listed; File No. E230874
Family Brand Name Hoffman
Rack Unit 51
Sub Brand Hoffman
Thickness 3.5 mm

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