Southwark Metal 127-NC_7IN Oval to Round Pipe Boot 7x7

Product Description

The SOUTHWARK METAL 127-NC_7IN is a straight, oval-to-round, no-crimp sheet metal pipe boot used to transition ductwork from an oval profile to a round pipe connection. Fabricated from hot dip galvanized steel, it resists corrosion in both supply and return air applications. The no-crimp end eliminates the need for field crimping before fitting a round collar or flex duct connector, saving time on installation. With a 7-inch oval inlet and a 7-inch round outlet, this boot fits standard residential and light commercial duct configurations. It meets ACCA and SMACNA standards, making it appropriate for code-compliant forced-air HVAC systems.

This pipe boot is used in forced-air heating and cooling systems where oval trunk lines or panned joist runs must transition to round branch runs. Typical install scenarios include connecting a round branch duct to an oval main trunk or terminating an oval duct run at a register boot location. It is suited for residential new construction and retrofit work alike, installed by licensed HVAC technicians and sheet metal contractors working on ducted air distribution systems.

Key Features

• Straight oval-to-round geometry transitions a 7-inch oval opening to a 7-inch round connection in a single fitting
• No-crimp outlet end accepts round duct or flex collar without additional field prep
• Hot dip galvanized steel construction provides corrosion resistance for long service life in air distribution systems
• Meets ACCA and SMACNA applicable standards for sheet metal duct fittings
• Compatible with standard round branch duct, flex duct connectors, and register boot collars

Compatibility

Designed as an OEM-style sheet metal fitting for use in residential and light commercial forced-air HVAC duct systems requiring an oval-to-round straight pipe boot transition at the 7-inch size.

Installation Notes

Installation should be performed by a qualified HVAC technician or licensed sheet metal contractor in accordance with SMACNA duct construction standards and local mechanical codes. Power down the air handling unit and close the fuel supply or disconnect electrical service before working inside the duct system. Secure the boot to adjacent ductwork with sheet metal screws and seal all joints with UL 181-rated mastic or approved foil tape to prevent air leakage. Do not use this fitting in applications outside its rated size or in venting systems for combustion appliances.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Size A (Oval Inlet): 7 inches
• Size B (Round Outlet Diameter): 7 inches
• Type: Straight, Oval to Round, No Crimp
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 127-NC_7IN