Who We Are
Altra Custom Manufacturing Inc. is a trusted leader in the HVAC industry, proudly delivering high-quality Rooftop Unit (RTU) Roof Curb Adaptors and a full line of Custom Fan / Exhaust Roof Curb products for over 25 years.
Founded on precision craftsmanship, reliable engineering, and exceptional customer service, we specialize in manufacturing custom solutions that simplify RTU replacement projects, ensure seamless equipment integration, and support manufacturers, wholesalers, contractors, engineers, and facility professionals across Canada.
Our Mission
Our team understands the challenges of retrofitting and new installations. Every product we manufacture is built to exact specifications, ensuring proper fit, structural integrity, and long-term durability — whether it's a standard roof curb, complex adaptor, or a fully custom design.
“Our mission has remained the same for over 3 decades: to provide the HVAC industry with reliable, custom-manufactured roof curb solutions that stand the test of time.”
RTU Curb Adaptors designed for compatibility with all major brands — exact fit every time.
Dependable customer support and quick manufacturing cycles to keep your projects on schedule.
Superior manufacturing processes using premium materials built for structural integrity and durability.
Custom-engineered designs for unique or complex site conditions — no project is too complex.
With decades of hands-on experience, we deliver solutions that save time on the roof and increase efficiency on every job — serving contractors, engineers, and facility professionals across North America.
Est. 1990 | North America’s HVAC Leaders
Altra Custom Manufacturing Inc. — a trusted leader delivering high-quality RTU Roof Curb Adaptors and Custom Fan / Exhaust Roof Curb products for over 30 years.
Ready to work with North America's trusted HVAC roof curb specialists? Let's build your solution.