Adapter Curbs

Adapter Curb

Whether you’re retrofitting an existing rooftop unit or upgrading to newer equipment, Curbs Plus Adapter Curbs provide the perfect solution for seamless transitions — maintaining roof integrity and improving install efficiency.

Ready to get started? Contact us for custom sizing, drawings, and specifications to match your project requirements.

Why Choose Curbs Plus Adapter Curbs?

✔ Ready to Install
Ships fully assembled* and engineered to save time on the jobsite — no field fabrication required.

✔ Exceptional Airflow
Our design prioritizes circulation efficiency so your system performs at its best.

✔ American-Made Durability
Constructed from heavy gauge G90 prime galvanized steel sourced domestically and built in our facilities.

✔ Built to Last
Rust-resistant welds, cold galvanize treatment, and vertical/sloped exterior surfaces prevent water pooling and corrosion issues common with other adapters.

✔ Moisture Control
Fully insulated walls, floors, and transitions prevent sweating and maintain system efficiency.

✔ Easy Installation Features
Every adapter includes fully welded lifting lugs to simplify rigging and placement.

CPT-1 Transition Curb

Built for Performance

Our CPT-1 Transition Curb is precision-manufactured to connect new rooftop units to existing curbs without the need for field assembly.

Designed for maximum airflow, this adapter helps optimize system performance while reducing operating costs over the life of the system.

CPT-1 Transition-Curb
Existing Verification Sheet
Adapter Curb

Typical Applications

Curbs Plus Adapter Curbs are commonly used for:

  • Transitioning new rooftop equipment to existing curbs

  • HVAC retrofit projects without field fabrication

  • Adapting mismatched duct and curb configurations

  • Improving airflow efficiency on retrofit installations

  • Projects requiring fast installation and reduced labor

Designed for Retrofit Efficiency

Adapter Curbs provide a reliable solution for upgrading rooftop equipment while preserving existing curbs. Engineered for accuracy and fit, they help minimize downtime, reduce field labor, and ensure proper airflow alignment on retrofit projects.