Industrial ductwork installed to the roof rafters and through the wall, featuring square and round duct, both insulated and uninsulated.

From standard rectangular ducts to complex spiral pipe and specialty fittings, we fabricate ductwork to your exact specifications with precision accuracy.

Large square ductwork exhausting Sullair air compressors located in a industrial building

Herman Metal

Quality Custom Ductwork

Herman Metal is the ductwork divison of Dericks Sheet Metal. We provide precision HVAC ductwork for North Jersey's commercial and industrial businesses. As a local, family-owned shop, we deliver the perfect combination of expert craftsmanship and personalized service. From rush jobs to complex specifications, we handle every project with the care and precision it deserves.

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We handle projects of any size, from small repairs to complete system fabrication for large commercial and industrial facilities.

Ventelation hood exhausting through the roof of an industial building
insulated ductwork hanging from roof rafters

Our experienced team works with you from concept to completion, providing expert guidance on materials, sizing, and installation.

Insulated ducwork
square ductwork in a warehouse supplying air from a roof air conditioning unit