Royal Building Products 35-1596 4 in Single Duct 90 Degree Gasketed

Product Description

The ROYAL BUILDING PRODUCTS 35-1596 is a 4-inch single duct 90-degree gasketed elbow fitting used in low-pressure duct systems. The gasketed design creates a sealed joint at the connection point, reducing air leakage at the elbow transition. This fitting directs airflow through a 90-degree change in direction and is a standard component in residential and light commercial ductwork assemblies. HVAC installers and sheet metal contractors typically use this fitting when routing round duct through tight spaces or around structural obstructions.

This elbow is suited for 4-inch round single duct installations in residential forced-air HVAC systems and light commercial applications. It is commonly installed in supply or exhaust branch runs where a 90-degree turn is required. The gasketed slip joint allows for a secure, low-leak connection to standard 4-inch duct sections without additional sealant in many configurations, though local code may require mastic or foil tape over all joints.

Key Features

• 90-degree elbow geometry for right-angle duct routing
• Gasketed slip joint connection for reduced air leakage
• Sized for 4-inch single duct systems
• Compatible with standard round duct fittings and sections

Compatibility

Designed as a standard 4-inch single duct replacement or new-installation fitting for residential and light commercial forced-air ductwork systems.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal contractor. Shut down and de-energize the air handling system before making duct modifications. Local mechanical codes and ASHRAE standards may require all duct joints, including gasketed fittings, to be sealed with mastic or listed foil tape. Verify fitting orientation before finalizing the connection to ensure proper airflow direction.

Technical Specifications

• Duct Diameter: 4 inches
• Elbow Angle: 90 degrees
• Connection Type: Gasketed slip joint
• Duct Type: Single duct
• UPC: 089938000474

Standard Information

• Brand: ROYAL BUILDING PRODUCTS
• Manufacturer Part Number: 35-1596