manufacturers g thru m
| wGlasfloss Industries |
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| wGoettl | |
| wGoodman |
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| wGoss | |
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| wHartell | wKlein Tools |
| wKlixon | |
| wKrack | |
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| wLau | |
| -Braukmann | wLittle Giant |
| -Enviracaire | wLove Controls |
| -Excel 5000 | wLuxaire |
| -FSG/Boiler Burner | wMARS |
| -Perfect Climate | wMacurco |
| -Pneumatics | wMag-Lite |
| -Residential | wMalco Products |
| -Zone Control | wMamac Systems |
| wHoshizaki |
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| wHyco Metals | wMarsh |
| wIdec | wMarshalltown |
| wImperial | wMaxitrol |
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| wJ W Harris | wMercoid |
| wJard | wMueller |
| wJefferson | wMulti-Products |
| wJohns Manville |