Plenums Plus is a Southern California manufacturer that specializes in fabricating rectangular, round, and flat oval duct & fittings in a variety of materials.  Since 1986 we have been partnering with HVAC and Mechanical contractors to provide their clients with quality duct systems at a fair price.  Located in San Diego County, we have supplied projects from Central California, to Guam, Arizona, Nevada, and as far south as La Paz, Mexico.

Plenums Plus fabricates a variety of other products such as; angle iron rings, electrical boxes, hoods, concrete forms, wall & floor sleeves, custom boxes and cabinets, cat walks, and a host of other items.  We have capacities up to 1/4" in sheet, and up to 1/2" in angles, shapes, and bars.

Plenums Plus

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Plenums Plus

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