Metalcraft 90430 Adjustable Duct Elbow 90 Degree 4 Inch

Product Description

The METALCRAFT 90430 is a 90-degree adjustable duct elbow designed for use in residential and light commercial HVAC ductwork systems. Fabricated from 30-gauge hot-dipped galvanized steel, this fitting provides a durable, corrosion-resistant connection point where duct runs require a right-angle change in direction. The 4-inch fitting size suits common branch and trunk duct configurations. Licensed HVAC technicians and sheet metal installers use this elbow during new construction, renovation, and duct repair work where a field-adjustable angle fitting is needed.

This elbow is suited for use in forced-air heating and cooling duct systems requiring a 90-degree directional change at a 4-inch duct connection. The adjustable design allows the installer to set the elbow angle on the job, reducing the need to carry multiple fixed-angle fittings. Typical applications include branch takeoffs, wall drops, and transitions where duct routing must navigate around framing or other obstructions in residential and light commercial builds.

Key Features

• 90-degree adjustable elbow for flexible duct routing at right-angle transitions
• 4-inch fitting size compatible with standard residential duct diameters
• 30-gauge steel construction provides consistent dimensional stability
• Hot-dipped galvanized finish resists corrosion in conditioned and unconditioned spaces
• 90 Series fitting for straightforward field installation

Compatibility

Designed as an OEM-style replacement and new-installation fitting for standard 4-inch round duct systems in residential and light commercial forced-air HVAC applications.

Installation Notes

Installation should be performed by a qualified HVAC technician or licensed sheet metal mechanic in accordance with local mechanical codes and SMACNA ductwork standards. Disconnect and lock out the air handler or furnace before working on the duct system. Secure the elbow to adjoining duct sections with sheet metal screws and seal all joints with listed duct sealant or metal-backed tape per applicable code. Avoid over-crimping the fitting collar, as this can distort the 30-gauge steel and compromise the seal.