Southwark Metal 55NC_7IN Duct Tee End Cap 7 in No Crimp

Product Description

The SOUTHWARK METAL 55NC_7IN is a no-crimp sheet metal duct tee end cap designed to close off the open branch end of a round sheet metal tee fitting in forced-air HVAC duct systems. Constructed from hot dip galvanized steel, this cap provides corrosion resistance suited to both conditioned and mechanical-room environments. The 7-inch diameter no-crimp design seats flush against the tee branch without requiring a crimped male end, simplifying installation in tight duct runs. HVAC sheet metal mechanics and duct installers use this component to cap unused or future-use branch outlets in supply and return trunk systems.

This end cap is used in residential and light commercial forced-air duct systems wherever a round sheet metal tee branch needs to be permanently or temporarily closed. It is appropriate for low-pressure supply and return air distribution applications built to ACCA and SMACNA standards. The no-crimp configuration is commonly selected when the adjacent fitting or duct section does not have a crimped male end, maintaining a clean, secure fit without modification to surrounding ductwork.

Key Features

• Hot dip galvanized steel construction resists corrosion in mechanical and conditioned-space installations
• No-crimp design fits flush without requiring a crimped male end on the mating fitting
• 7-inch diameter matches standard round duct tee branch sizing
• Compliant with ACCA and SMACNA applicable standards for sheet metal duct fabrication
• Seals unused or future-use tee branch outlets to maintain system pressure balance

Compatibility

Designed as an OEM-style sheet metal component for use with 7-inch diameter round duct tee fittings in forced-air HVAC duct systems built to ACCA and SMACNA standards.

Installation Notes

Installation is typically performed by licensed sheet metal mechanics or HVAC technicians following SMACNA duct construction standards. Shut down the air handler and confirm the system is depressurized before removing or capping any duct branch. Secure the end cap with sheet metal screws and seal all joints with UL 181-rated duct sealant or foil tape as required by local mechanical code. Do not rely on friction fit alone in pressurized supply duct applications.

Technical Specifications

• Diameter: 7 inches
• Material: Hot Dip Galvanized Steel
• Type: No Crimp
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 55NC_7IN