Seal-tite 233-0704 Short Duct Reducer 7x4 Inches

Product Description

The SEAL-TITE 233-0704 is a short duct reducer designed to transition airflow from a 7-inch duct opening down to a 4-inch duct opening without the need for a crimped end. This fitting is used in forced-air HVAC systems where duct diameter changes are required between trunk lines, branches, or equipment connections. The no-crimp design simplifies connections to flex duct and round fittings, reducing installation time. HVAC technicians and sheet metal installers handle this type of fitting during new construction, retrofit, and duct modification work.

The 233-0704 is suited for residential and light commercial forced-air duct systems where a concentric or eccentric reduction from 7 inches to 4 inches is needed. Typical applications include trunk-to-branch transitions, equipment supply and return connections, and duct system reconfigurations. The short-body design is useful in tight mechanical spaces where a standard-length reducer would not fit.

Key Features

• Transitions airflow from 7-inch duct to 4-inch duct
• No-crimp end allows direct connection to flex duct collars and round fittings
• Short-body profile fits in confined mechanical spaces
• Designed for forced-air residential and light commercial duct systems

Compatibility

Designed as an OEM-style replacement or new-installation fitting for round duct systems requiring a 7-inch to 4-inch diameter reduction.

Installation Notes

Installation is typically performed by licensed HVAC technicians or sheet metal workers. Power down the air handling unit and verify the system is de-energized before cutting into or modifying any ductwork. Secure all connections with approved UL 181-rated tape or mastic sealant per local mechanical code requirements. Inspect the fitting for proper seating before restoring system operation.

Technical Specifications

• Inlet Diameter: 7 inches
• Outlet Diameter: 4 inches
• End Type: No Crimp
• Body Length: Short

Standard Information

• Brand: SEAL-TITE
• Manufacturer Part Number: 233-0704