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ProTek Double-Hinged Fan Packages

Bulletin Number:

  • DWDH2
  • Industry Standards:

    UL 508A Listed; File Number E61997 cUL Listed per CSA C22.2 No. 94; File Number E61997 Solid Door: Type 3R Window Door: Type 1 NEMA / EEMAC: Type 1 or 3R IEC 60529, IP30 or IP 32, IK 10
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    Pretreated steel coated with light-gray, low-gloss, lightly textured RAL 7035 polyester powder


    ProTek Double-Hinged Fan Package cabinets are an excellent, off-the-shelf choice for mounting 19-in. rack, panel-mounted devices or other electronic equipment. An integral top solar/drip shield and thermostatically-controlled fans provide airflow to cool internal equipment. Cabinets are available in UL Type 3R for outdoor use. A UL Type 1 window version is available for indoor applications. The cabinets are designed to provide both front and rear access to 19-in. rack-mounted equipment. They provide protection against water, dirt and other contaminants. ProTek is an excellent choice for applications where space is at a premium and the only option is wall mounting. ProTek comes in a broad range of sizes, materials and configurations to meet many demanding applications.


  • Doors made of 16 gauge; wall and center sections made of 14 gauge steel
  • Integral top with two 6-in. fans powered by 120 VAC via cord with standard NEMA plug, provide 230 CFM of airflow
  • Window made of .25-in. safety glass
  • Rack angles with 10-32 tapped holes per EIA universal standards are made of 12 gauge plated steel
  • Incoming air filter made of expanded aluminum
  • M6 door and body ground studs are masked from paint
  • Twenty 10-32 rack angle equipment mounting screws included with cabinet
  • Foam-in-place gasket made of durable polyurethane
  • Inline thermostat turns fans on when temperature exceeds 85 F/30 C
  • Accessories:

  • Locks and handles
  • Panels (steel and wood)
  • Grounding kits
  • Power Distribution Units (PDUs)
  • Rack angles
  • Features:

  • Front and rear access to 19-in. rack equipment provided by three-part design: door, center section and wall section
  • Solid door provides complete physical and visual protection
  • Integral top solar/drip shield
  • Two thermostatically controlled, long-life, high-performance fans mounted into top
  • Window door, made of .25-in. scratch-resistant safety glass and mechanically fastened, provides visual monitoring of internal equipment while maintaining equipment protection
  • All seams are fully welded and ground smooth
  • Perforated, vented base with internal, expanded metal, serviceable filter
  • Door, center section and wall section are provided with ground studs to facilitate proper bonding and grounding of the cabinet
  • Premium seamless, foam-in-place gasket prevents contaminants from entering the cabinet
  • Keylocking wing knob provides access control to the cabinet; two keys are included with each cabinet
  • One set of plated, self-grounding, tapped 10-32 rack angles per EIA universal spacing standards, adjustable front-to-back within the center section of the cabinet
  • Additional rack angles in tapped- or square-hole versions can be added to the cabinet
  • Wall section welded panel studs which accommodate standard panels (steel and wood available), can be ordered separately
  • Load Ratings:

  • Height: Rating
  • 24 in.: 250 lb./113.4 kg
  • 36 in.: 300 lb./136.0 kg
  • 48 in.: 350 lb./158.7 kg
  • Notes:

  • Performance data based on:
  • Effective measured airflow provided by integral fans is 272 CFM
  • Delta T or ΔT (Ambient Temperature – Maximum in-cabinet Temperature): Ambient air must be cooler than maximum in-cabinet temperature; For applications that have less than a ΔT of 5 F, use ProTek with AC unit
  • Total Cooling = (Air cooling + Cabinet cooling)
  • Air Cooling [Watts = .316 x CFM x ΔT] Cabinet cooling [Watts = (.22 x Area) / ΔT]
  • Example: Cabinet height 24 in. x 24 in. deep with ambient temperature 110 F, with a maximum internal cabinet temperature 120 F (ΔT = 10 F). The cabinet and fans will provide a total cooling capability of 762 Watts or 1300 BTU. (See Performance Chart)
  • Drawings and Technical Publications are available by clicking the "Items" tab. Select your desired Catalog Number and click on the Downloads tab for that particular catalog number.
    Catalog Number A in. B in. C in. Rack Units P in. Optional Steel Panel Optional Wood Panel Additional Rack Angles a Q in.
    Catalog Number A in. B in. C in. Rack Units P in. Optional Steel Panel Optional Wood Panel Additional Rack Angles a Q in.
    24.09 23.62 24.02 12 --- CP2020 CP2020W PTRA24T or PTRA24S -
    36.3 23.62 24.02 19 --- CP3220 CP3220W PTRA36T or PTRA36S -
    48.62 23.62 24.02 26 --- CP4420 CP4420W PTRA48T or PTRA48S -
    24.09 23.62 24.02 12 18.25 CP2020 CP2020W PTRA24T or PTRA24S 15.38
    36.3 23.62 24.02 19 30.75 CP3220 CP3220W PTRA36T or PTRA36S 15.38
    48.54 23.62 24.02 26 42.70 CP4420 CP4420W PTRA48T or PTRA48S 15.38