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


  • Uprights on the tapped-hole model are made of lightweight extruded aluminum (6063-T6 alloy) and include RU markings on both front and back of uprights
  • Uprights on the square-hole model are made from 12 gauge steel
  • Top and bottom angles made of extruded aluminum (6063-T6 alloy)
  • Depth adjustable 450 mm to 1050 mm (17.7 in. to 41.3 in.) in 25-mm (.98-in.) increments
  • EIA universal 5/8 - 5/8 - 1/2 in. spaced 12-24 tapped holes or .375-in. square holes fit 19-in. rack equipment
  • Compatible with 19-in. rack accessories
  • Available with nominal frame height of 6, 7 and 8 ft.
  • RU markings on both front and back of tapped-hole uprights make it easier to mount equipment
  • Floor mounting holes predrilled at .750-in. 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
  • Shipped unassembled for convenient transport to job site


  • Bulletin Number: DOFR4
  • Material: Aluminum
  • Model Code: 10012
  • Ship Wt. Std. Pkg. (lbs): 72.1
  • Interchangeable: False
  • Finish: Alum/Black
  • Catalog Number: E4DR19FM51U
  • A in.: 96
  • B in.: 20.25
  • Rack Units: 51
  • Mounting Hole Type: Tapped
  • Nominal Frame Height A: 8
  • Finish: Black
  • Standards: UL 2416 Listed; File No. E230874 || cUL Listed per CSA C22.2 No. 182.4; File No. E230874 || EIA 310-D



UPC 78351010012
GTiN 00783510100124
Finish Alum/Black,Black
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

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