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Manufacturer Hoffman Engineering
Mfg Catalog # PLM52G52
North Coast Part # 877228


  • No modification of the enclosure required - designed to match the enclosure cut-out and mounting holes of the air conditioner being replaced
  • Plenum design allows for optimum air flow (vs. a flat plate that can block the air intake and air outtake left by the older air conditioner)
  • Gasket included
  • 18 gauge steel


  • To quickly identify the correct air conditioner and plenum download the spec sheet from the Downloads tab or download the Easy Swap app from Apple App or Google play stores
  • Please contact Customer Service for support in finding an appropriate cross for older Hoffman/McLean models not shown above.
  • Prior to ordering, ensure Adaptor Plenum dimensions do not exceed available space on the enclosure mounting surface.
  • ISC is a registered trademark of ISC Sales, Inc.
  • Kooltronic is a registered trademark of Kooltronic, Inc.
  • Pfannenberg is a registered trademark of Pfannenberg Incorporated
  • Rittal is a registered trademark of Rittal Corporation
  • Adaptor Plenums for Rittal are not suitable for replacing partial-recessed or fully-recessed mounted air conditioners.
  • Thermal Edge is a registered trademark of Thermal Edge, Inc.


  • Model Code: 26298
  • Bulletin Number: MCLX
  • Catalog Number: PLM52G52
  • Air Conditioner Manufacturer To Replace: Hoffman/Mclean, Kooltronic, Pfannenberg
  • Height (in.): 52.56
  • Width (in.): 17.03
  • Depth (in.): 1.50
  • Standards: Maintains NEMA Type 12 rating when properly installed on a Type 12 enclosure. || NEMA Type 12 || IP 54



UPC 78351026298
GTiN 00783510262983
Finish Lt Gray
Width 17.03 in
Size 52.56 x 17.03 x 1.5 in
Applications Controls and Drives; Power Distribution
Depth 1.50 in
Height 52.56 in
Standard IP 54,Maintains NEMA Type 12 Rating When Properly Installed On A Type 12 Enclosure.,NEMA Type 12
Family Brand Name Hoffman
Sub Brand Easy Swap
Type Air Conditioners

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