At SIDCO Spiral Duct Inc., we manufacture quality HVAC spiral ducts and fittings designed for durability, precision, and long-term performance. Every product is built using premium galvanized steel, paint grip steel, and custom materials based on project requirements. With years of industry experience, advanced CNC technology, and strict quality standards, we deliver reliable solutions for commercial, industrial, and residential ventilation systems.
We manufacture a variety of spiral ducts to meet all airflow and ventilation needs:
Galvanized Spiral Duct
Paint Grip Spiral Duct
Ribbed Spiral Duct
Double Wall Spiral Duct
20 Gauge / 22 Gauge / 24 Gauge / 26 Gauge Options
All ducts offer superior strength, air-tightness, corrosion resistance, and clean appearance—perfect for exposed and concealed installations.
SIDCO produces precision-cut, perfectly fitted components to complete any ducting system:
Elbows (90°, 45°, 30°)
Reducers (Concentric & Eccentric)
End Caps
Saddle Taps / Tap-offs
Offsets
Tee & Wye Fittings
Couplings & Connectors
Custom Transition Pieces
Every fitting is CNC-designed for accurate airflow, easy installation, and long lifespan.
We design high-strength, weather-resistant custom roof curbs for:
HVAC units
Duct penetrations
Equipment supports
All roof curbs are made with durable galvanized steel and can be fabricated in any size, slope, or configuration.
We offer custom metal fabrication for:
Linear diffusers
Ceiling grills
Return air boxes
Plenums
Junction boxes
Mounting brackets
Hangers & support parts
These accessories are built to match any architectural or mechanical requirement.
Premium materials (galvanized, paint grip,)
CNC accuracy for perfect fit
Fast production times
Custom manufacturing available
Strong, durable, and leak-resistant designs
Made to meet industry standards