Type 4X Polyester Junction Box with Window PJU Series Various Door Styles


SKU: PJU664WF Hammond Manufacturing


  • Designed for use as instrument enclosures, electric, hydraulic or pneumatic control housings, electrical junction boxes or terminal wiring enclosures.
  • Provides outstanding insulation and protection where equipment may be hosed down or be very wet.
  • Ideal in applications with high temperatures or highly corrosive environments.


  • UL 508A Type 1, 2, 3, 4, 4X, 12 and 13
  • CSA Type 1, 2, 3, 4, 4X, 12 and 13
  • Complies with
    • NEMA Type 1, 2, 3, 4, 4X, 12 and 13
    • IEC 60529, IP66


  • Molded fiberglass polyester enclosure with matching cover is easily punched, cut, or drilled.
  • Enhanced UV inhibitors protect against outdoor weathering.
  • Standard JIC sizes under 18"x16".
  • Threaded brass inserts are provided for optional inner panel or terminal kit mounting. Mounting hardware is included.
  • Various latching options.
  • Enclosures are available with bonded polycarbonate viewing windows.
  • Door is supported with a continuous stainless steel hinge pin.
  • Captive oil resistant gasket provides a positive seal.
  • Threaded brass inserts are provided for mounting feet to the rear of the enclosure.
  • Operating temperatures between 130°C and -40°C (266°F to -40°F).
  • Impact index of 6.78J (5 ft/lb).
  • For corrosion resistance information, please refer to table in the Technical Information section.


  • Fiberglass polyester material has a light gray finish.
  • Optional inner panels are available in white powder coated finished steel or unfinished aluminum, or Fiberglass.


Lift-Off Screw Cover Hinged Screw Cover Hinged Snap Latch Enclosure Optional Inner Panel
w/Flange w/Feet w/Flange w/Feet w/Flange w/Feet
Part No. Part No. Part No. Part No. Part No. Part No. H W D H W Part No.
PJU664WF PJU664W PJU664HWF PJU664HW PJU664LWF PJU664LW 6.05 6.27 4.13 4.88 4.88 14R0505
PJU864WF PJU864W PJU864HWF PJU864HW PJU864LWF PJU864LW 8.05 6.27 4.13 6.75 4.88 14R0705
PJU1084WF PJU1084W PJU1084HWF PJU1084HW PJU1084LWF PJU1084LW 10.05 8.27 4.13 8.75 6.88 14R0907
PJU1086WF PJU1086W PJU1086HWF PJU1086HW PJU1086LWF PJU1086LW 10.05 8.27 6.13 8.75 6.88 14R0907
PJU12106WF PJU12106W PJU12106HWF PJU12106HW PJU12106LWF PJU12106LW 12.05 10.27 6.13 10.75 8.88 14R1109
PJU14126WF PJU14126W PJU14126HWF PJU14126HW PJU14126LWF PJU14126LW 14.05 12.27 6.13 12.75 10.88 14R1311
PJU16148WF PJU16148W PJU16148HWF PJU16148HW PJU16148LWF PJU16148LW 16.05 14.27