Round Duct
Spiral Round Duct Helically formed spiral duct with high structural integrity. Industry standard for commercial HVAC systems. Offers excellent airflow characteristics and minimal leakage.
4" 5" 6" 7" +10 more
Round Duct
Snap Lock Round Pipe Longitudinal seam pipe formed by snapping a lock seam. Cost-effective for residential and light commercial applications. Faster installation than spiral duct.
3" 4" 5" 6" +4 more
Rectangular Duct
TDC Rectangular Duct Transverse Duct Connection system rectangular duct. The gold standard for commercial installations. Provides superior joint rigidity and is SMACNA rated for low, medium and high pressure.
6"x6" 8"x6" 10"x6" 12"x8" +6 more
Rectangular Duct
S&D Rectangular Duct Slip and drive rectangular duct used for residential and light commercial low-pressure systems. Economical and fast to install.
4"x4" 6"x4" 8"x4" 10"x6" +4 more
Flat Oval Duct
Flat Oval Spiral Duct Spiral-wound duct with an elliptical cross-section. Ideal when height clearance is restricted but the performance of round duct is needed. Lower air resistance than equivalent rectangular duct.
7"x5" 9"x5" 12"x6" 15"x7" +4 more
Elbows & Turns
Round 90° Elbow Standard 90-degree elbow for round duct systems. Available in stamped (economy) and gored (segmented) construction. Gored elbows have better airflow characteristics.
4" 5" 6" 7" +8 more
Elbows & Turns
Round 45° Elbow 45-degree turn elbow for gradual direction changes. Lower pressure drop than a 90° elbow. Two 45° elbows can replace one 90° with significantly less turbulence.
4" 5" 6" 7" +5 more
Elbows & Turns
Adjustable Round Elbow Flexible-angle elbow adjustable from 0° to 90°. Ideal for field-fitting around unexpected obstacles. Consists of two gored sections connected by a swivel joint.
4" 5" 6" 7" +3 more
Transitions & Reducers
Concentric Round Reducer Reduces round duct from a larger to a smaller diameter. Concentric design keeps the centerline aligned, ideal for suspended duct systems.
8"→6" 10"→8" 12"→10" 14"→12" +4 more
Transitions & Reducers
Rectangular-to-Round Transition Connects rectangular ductwork to round duct or equipment. Critical fitting at air handler connections and where the duct system changes geometry.
8"x6"→6"R 10"x8"→8"R 12"x8"→8"R 14"x10"→10"R +2 more
Tees, Wyes & Takeoffs
Round Wye (Y-Branch) Splits a main duct into two branches at an angle, typically 30° or 45°. More energy-efficient than a tee because flow splits gradually rather than abruptly.
8"→6"+6" 10"→8"+8" 12"→10"+10" 14"→12"+10" +1 more
Tees, Wyes & Takeoffs
Spin-In Takeoff (Register Boot Collar) Field-installed takeoff that cuts into an existing round duct to add a branch. The damper blade allows airflow balancing without a separate damper. Fastest branch fitting to install.
4" 5" 6" 7" +2 more
Dampers & Volume Controls
Manual Volume Damper (MVD) Single-blade butterfly damper for manual airflow balancing. Locking quadrant allows precise setting and tamper-resistant operation after balancing.
4" 5" 6" 7" +5 more
Hangers & Accessories
Galvanized Strap Hanger Perforated galvanized steel strap for hanging round and flat oval duct from structure. Most economical and versatile duct support. Available in multiple widths for different duct weights.
¾" wide 1" wide 1½" wide 2" wide
Hangers & Accessories
Gripple Wire Hanger System Modern spring-tension wire hanger system using galvanized aircraft cable and Gripple tensioners. Faster to install than traditional rod/strap systems. SEISMIC-rated options available.
Standard (up to 25 lb load) Heavy Duty (up to 55 lb load) Seismic (IBC compliant)