Our Product Specialties

Custom HVAC Ductwork Fabrication

We fabricate custom HVAC ductwork for residential and commercial applications, built to match exact project requirements. Every section is measured, cut, and formed for proper airflow, clean connections, and efficient installation.

Our ductwork is designed to fit the jobsite — not force installers to make it work. The result is faster installs, fewer adjustments, and dependable performance.

Transitional Fittings

Transitional fittings are critical for proper airflow and system performance. We fabricate custom transitions that smoothly connect differing duct sizes and shapes while minimizing turbulence and pressure loss.

Square-to-Round Fittings

We build square-to-round fittings that are accurately formed and properly aligned for reliable connections in residential and commercial HVAC systems.

Transitional Fittings

Transitional fittings are critical for proper airflow and system performance. We fabricate custom transitions that smoothly connect differing duct sizes and shapes while minimizing turbulence and pressure loss.

Specialty & Custom Sheet Metal Fittings

For unique or challenging projects, we specialize in custom and specialty HVAC sheet metal fabrication. If you can describe it — or sketch it — we can fabricate it.

(Stock Items)

Residential Registers

Residential registers provide a clean finish and dependable airflow control.

Adjustable Elbows

Adjustable elbows are kept in stock for fast
turnaround and on-site flexibility.

Commercial Diffusers

Commercial diffusers are available for reliable
airflow distribution and clean installation.

© 2026 Aaadonta- All Rights Reserved.

Contact

740-397-7572

W. Elkhorn Blvd. Rio Linda CA 95673