Steel Air Heater Plenum Box
Welded steel plenum chamber that connects non-electric air heaters to ductwork in commercial buildings. Houses mixing dampers for hot air distribution. HTS 7322.90.00 as part of air heaters/hot air distributors.
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More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If general fabricated steel item
Other steel articles not fitting specific 7322 function under 7326.
If for industrial machinery
Machinery parts with air distribution for non-heating use.
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Import Tips & Compliance
• Specify non-electric heater compatibility in technical data sheets
• Pressure ratings and gauge thickness must be documented
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