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MASTERCOOL® AND ARCTICCIRCLE® RESIDENTIAL
AND INDUSTRIAL U.L. LISTED COOLERS

All MasterCool® and ArcticCircle® evaporative coolers are made to meet U.L. Classification requirements – in accordance with the Uniform Mechanical Code.

MasterCool® or ArcticCircle® evaporative coolers that meet U.L. Listed requirements are available in accordance with the Uniform Mechanical Code.

All U.L. Listed MasterCool residential and industrial products have GLASdek® media, with the exception of Industrial Fan units.

The following charts list MasterCool® RESIDENTIAL and INDUSTRIAL
U.L. Classified / U.L. Listed Models.

MasterCool®
RESIDENTIAL
U.L. Classified Models

MD524
MS524
MD628
MS628
MC43
MC44
MC63
MC64
HC43
HC44
HC63
HC64
CMC431
CMC432
CMC441
CMC442
CMC631
CMC632
CMC641
CMC642
CHC431
CHC432
CHC441
CHC442
CHC451
CHC452
CHC631
CHC632
CHC641
CHC642
CHC651
CHC652

Equivalent MasterCool®
RESIDENTIAL
U.L. Listed Models

UD960
US960
UD980
UD980
MC435
MC445
MC635
MC645
HC435
MC445
HC635
HC645
CMC433
CMC434
CMC443
CMC444
CMC633
CMC634
CMC643
CMC644
CHC433
CHC434
CHC443
CHC444
CHC453
CHC454
CHC633
CHC634
CHC643
CHC644
CHC653
CHC654

All dimensions of the U.L. Listed models are the same as their equivalent U.L. Classified models.