HEE’s fiberglass duct systems are a preferred method of venting in a variety of applications.

Our manufacturing process ensures uniform duct thickness and high quality products.

We use premium quality resin and glass systems with resin rich interiors for corrosion resistance and fire retardant exteriors that are UV stabilized.

Our duct and fittings are manufactured in accordance with the National Bureau of Standards, Voluntary Product Standards P.S. 15-69.

We manufacture both round and rectangular duct. Round duct is available in standard 3” to 144” diameter sizes, with non-standard and rectangular sizes available upon request.

Fittings include 90 degree, and 45 degree elbows, locking quadrant dampers, tee and wye branches, and all custom configurations as required.

Our shop can also spool your duct project as required.

Typical applications include:
• Semiconductor manufacturing
• Circuit board manufacturing
• Chemical manufacturing & processing
• Metal plating & finishing
• Battery manufacturing
• Power plants
• Waste treatment facilities