Southwark Metal 15_28X8 Trunk Duct Angle 45 Degree 28x8

Product Description

The SOUTHWARK METAL 15_28X8 is a 45-degree shortway trunk duct angle fabricated from hot dip galvanized steel. It is a rectangular sheet metal fitting used to change direction in low-pressure supply and return air duct systems. The shortway orientation means the turn is made along the narrow dimension of the duct cross-section, keeping the fitting compact in tight mechanical chases. At 28 inches by 8 inches on both the inlet and outlet, this fitting handles a full-size trunk run without reducing duct area through the transition. HVAC sheet metal installers and duct fabricators work with this component during rough-in on residential and light commercial forced-air systems.

This trunk duct angle is sized for rectangular duct trunk lines in forced-air heating and cooling systems. The vertical, shortway configuration is commonly installed where overhead or wall clearances limit how far a fitting can extend in the longway direction. The 28 inch by 8 inch profile fits standard trunk duct runs and is appropriate for both new construction and retrofit work where a 45-degree directional change is needed in the main supply or return trunk.

Key Features

• 45-degree angle provides a gradual directional change to reduce turbulence in the airstream
• Shortway rectangular configuration suits installations with limited clearance in the longway plane
• Hot dip galvanized steel construction resists corrosion in unconditioned attic, crawlspace, and basement environments
• 28 inch by 8 inch inlet and outlet dimensions match full-size trunk duct runs without area reduction
• Fabricated to ACCA and SMACNA standards for duct construction and airflow performance

Compatibility

Designed as an OEM-style sheet metal fitting for rectangular trunk duct systems built to ACCA and SMACNA standards. Compatible with 28 inch by 8 inch rectangular duct trunk lines in residential and light commercial forced-air HVAC applications.

Installation Notes

Installation is typically performed by a licensed sheet metal worker or HVAC technician following SMACNA duct construction standards and local mechanical code requirements. Power down the air handling unit and close the system before cutting into or connecting to an existing duct run. Seal all joints with approved duct sealant or UL 181-listed tape per code. Do not use sheet metal screws in locations that will obstruct airflow inside the fitting.

Technical Specifications

• Angle: 45 degrees
• Type: Vertical, Shortway, Rectangular
• Size A: 28 inches length x 8 inches width
• Size B: 28 inches length x 8 inches width
• Material: Hot Dip Galvanized Steel
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 15_28X8