Hoffman E4DR19FM45U | 4-Post Open Frame Rack 45U, 84.00x20.25, Black, Aluminum, Tapped
Hoffman E4DR19FM45U | 4-Post Open Frame Rack 45U, 84.00x20.25, Black, Aluminum, Tapped

Hoffman E4DR19FM45U | 4-Post Open Frame Rack 45U, 84.00x20.25, Black, Aluminum, Tapped

Part Number: 314578
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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.


Main Features

  • 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
  • Shipped unassembled for convenient transport to job site
  • 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)


Industry Standards

  • UL 2416 Listed; File No. E230874
  • cUL Listed per CSA C22.2 No. 182.4; File No. E230874
  • EIA 310-D


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Height83.88 in / 2131 mm
Width20.25 in / 514 mm
Mounting Hole TypeTapped
Rack Units45
Nominal Frame Height7 ft
ColorJet Black
Color CodeRAL 9005
FinishPowder Coated
Thickness0.14 ga / 3.5 mm
Weight68 lb


Documents and Downloads

Hoffman E4DR19FM45U CE-00050Click to View
Hoffman E4DR19FM45U Declaration of ComplianceClick to View
Hoffman E4DR19FM45U CERT-00137Click to View
Hoffman E4DR19FM45U 4-Post Open Frame Rack Instruction ManualClick to View
Hoffman E4DR19FM45U Data SheetClick to View

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