Modular Server Rack Cabinet C4 Series

UL 2416 Rated 3,000 lbs (1,361 kg) Weight Capacity

When you prefer complete flexibility, our modular C4 series allows you to select every feature. We can ship the components to you for assembly*, we can assemble the cabinet for you or you can choose from some of our popular pre-assembled cabinets, here.

Available Options Include:

  • 24U, 42U and 44U mounting heights.
  • 24" and 30" overall frame widths.
    • 24” wide frame includes generous cabling space and four (4) 3.5” wide cable entry holes on the top.
    • 30” wide frame includes extra generous cabling space and support for up to four optional vertical cable managers
  • 31.5", 36" and 42" overall frame depths.
  • All frames include four (4) leveling feet and support optional casters.
  • 19" Mounting rails are available in square hole punched or drilled and tapped 10-32.
  • Flush mounted doors with quarter-turn lock available in solid, tinted window, vented full or split/barn.
  • Side panels available in both solid and vented for thermal induction.
  • One (1) interchangeable top panel opening; available in solid, vented, fan tops with or without fans installed.
  • One (1) interchangeable bottom panel opening, available in solid.
  • Vertical cable managers are available in tray, enclosed metal or fingers versions.


  • Cabinet frame constructed in 14-gauge steel cabinet with 12-gauge steel re-enforced corner brackets.
  • Cabinet doors and side panels constructed in 16-gauge steel.
  • 19" mounting rails are constructed in 12-gauge steel (square hole punched) or 10-gauge steel (drilled and tapped 10-32).
    • Rails include rack unit indicators, and are Zinc-plated to provide superior surface areas for equipment grounding.
    • C-channel struts provide cabinet strength, ease and flexibility to adjust mounting rails.
  • *When assembled by Hammond, cabinet is UL Listed 2416 load rated for up to 3,000 lbs (1,360 kg). Static Load tested to 12,000 lbs (5,443 kg).
  • Grounding studs provided on frame as well as side panels and doors. Front and rear studs on cabinet frame conform to PET.
  • Finished in textured black powder paint.
  • Meets PCI DSS (Payment Card Industry Data Security Standard) compliance requirements.
  • TAA compliant for GSA Schedule purchases.
  • RoHS Compliant.
  • Manufactured in North America.

Build your own cabinet configuration using Q-Assembly

Click here to view our Pre-Assembled C4RR Cabinet Series.


C4 Open Frames and Rail Options

Part No. Overall Dimensions Rack Usable Mounting Dimensions 19" Rack Rails (Pairs)
Height Width Depth Units Height Depth Tapped 10-32 Square Hole
C4F244231BK1 48.58 24.00 31.50 24U 42.00 29.50 Not Available C4PR2442SZPL
C4F244236BK1 48.58 24.00 36.00 24U 42.00 34.00 Not Available C4PR2442SZPL
C4F244242BK1 48.58 24.00 42.00 24U 42.00 40.00 Not Available C4PR2442SZPL
C4F247331BK1 80.08 24.00 31.50 42U 73.00 29.50 C4PR2473TZPL C4PR2473SZPL
C4F247336BK1 80.08 24.00 36.00 42U 73.00 34.00 C4PR2473TZPL C4PR2473SZPL
C4F247342BK1 80.08 24.00 42.00 42U 73.00 40.00 C4PR2473TZPL C4PR2473SZPL
C4F247731BK1 83.58 24.00 31.50 44U 77.00 29.50 C4PR2477TZPL C4PR2477SZPL
C4F247736BK1 83.58 24.00 36.00 44U 77.00 34.00 C4PR2477TZPL C4PR2477SZPL
C4F247742BK1 83.58 24.00 42.00 44U 77.00 40.00 C4PR2477TZPL C4PR2477SZPL
C4F307731BK1 83.58 30.00 31.50 44U 77.00 29.50 C4PR77TZPL C4PR77SZPL
C4F307736BK1 83.58 30.00 36.00 44U 77.00 34.00 C4PR77TZPL C4PR77SZPL
C4F307742BK1 83.58 30.00 42.00 44U 77.00 40.00 C4PR77TZPL C4PR77SZPL

C4 Doors (Hinged on Left)

Part No. Part No. Part No. Part No. Use with Cabinet
Solid Door Acrylic Door Perforated Perforated Split Doors Rack Units Width
C4DF2442SBK1 C4DF2442PBK1 C4DF2442VBK1 C4BD2442VBK1 24U 24.00
C4DF2473SBK1 C4DF2473PBK1 C4DF2473VBK1 C4BD2473VBK1 42U 24.00
C4DF2477SBK1 C4DF2477PBK1 C4DF2477VBK1 C4BD2477VBK1 44U 24.00
C4DF3077SBK1 C4DF3077PBK1 C4DF3077VBK1 C4BD3077VBK1 44U 30.00

C4 Side Panels (Sold in Pairs)

Part No. Part No. Use with Cabinet
Solid Vented Rack Units Depth
C4SP4231SBK1 C4SP4231VBK1 24U 31.50
C4SP4236SBK1 C4SP4236VBK1 24U 36.00
C4SP4242SBK1 C4SP4242VBK1 24U 42.00
C4SP7331SBK1 C4SP7331VBK1 42U 31.50
C4SP7336SBK1 C4SP7336VBK1 42U 36.00
C4SP7342SBK1 C4SP7342VBK1 42U 42.00
C4SP7731SBK1 C4SP7731VBK1 44U 31.50
C4SP7736SBK1 C4SP7736VBK1 44U 36.00
C4SP7742SBK1 C4SP7742VBK1 44U 42.00

C4 Top Panels

Part No. Part No. Part No. Part No. Part No. Part No. Use with Cabinet
Four (4) 4.7" One (1) 10"
Fan Cutout/ 100CFM Fans 550 CFM Fan
Solid Vented Cable Entry Fan Vents With Thermostat Without Thermostat
Top Panel Top Panel Top Panel Top Panel Top Panel Top Panel Width Depth
C2T1923SBK1 C2T1923VBK1 C2T1923FBK1 C2T1923VFBK1 C2T1923F4TBK1 C2T1923F10BK1 24.00 31.50
C2T1931SBK1 C2T1931VBK1 C2T1931FBK1 C2T1931VFBK1 C2T1931F4TBK1 C2T1931F10BK1 24.00 36.00
C2T1936SBK1 C2T1936VBK1 C2T1936FBK1 C2T1936VFBK1 C2T1936F4TBK1 C2T1936F10BK1 24.00 42.00
C2T2423SBK1 C2T2423VBK1 C2T2423FBK1 C2T2423VFBK1 C2T2423F4TBK1 C2T2423F10BK1 30.00 31.50
C2T2431SBK1 C2T2431VBK1 C2T2431FBK1 C2T2431VFBK1 C2T2431F4TBK1 C2T2431F10BK1 30.00 36.00
C2T2436SBK1 C2T2436VBK1 C2T2436FBK1 C2T2436VFBK1 C2T2436F4TBK1 C2T2436F10BK1 30.00 42.00

C4 Bottom Panel

Part No. Use with Cabinet
Width Depth
C4B2431SBK1 24.00 31.50
C4B2436SBK1 24.00 36.00
C4B2442SBK1 24.00 42.00
C4B3031SBK1 30.00 31.50
C4B3036SBK1 30.00 36.00
C4B3042SBK1 30.00 42.00

C4 Vertical Cable Manager

Cable Tray Cable Tray with Tooless PDU Bracket Metal Manager with Hinged Door Finger Manager Use with Cabinet
(30" wide version comes with door) Rack Units Width
VCT42 - - - 24U 24.00
VCT73 VCTPDU73 - C4VFM42UBK 42U 24.00
VCT77 VCTPDU77 - C4VFM44UBK 44U 24.00
VCT42 - - - 24U 30.00
VCT73 VCTPDU73 - C4VFMC3042UBK 42U 30.00
VCT77 VCTPDU77 C4VCM77BK1 C4VFMC3044UBK 44U 30.00

C4 Right-Hand Hinge


Split Door Retrofit Kit

Part No. SDRK

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Data subject to change without notice.