Air Flow Products EC18 Tee End Cap 18 Inches

Product Description

The AIR FLOW PRODUCTS EC18 is a tee end cap designed to terminate or close off the open end of an 18-inch tee fitting in a duct or pipe distribution system. It provides a clean, secure seal at the end of a branch run, preventing airflow bypass and maintaining system integrity. Licensed HVAC technicians and sheet metal contractors install this cap as part of completed duct assemblies where a branch tee has an unused or terminal opening requiring closure.

This end cap is suited for residential and light commercial HVAC duct distribution work where 18-inch tee fittings are used. It is typically installed at the termination point of a supply or return air branch run, ensuring no air loss occurs at open tee connections. It is designed for use with Series 88 tee fittings.

Key Features

• Closes off the open end of an 18-inch tee fitting for a complete, sealed termination
• Compatible with Series 88 tee fittings as indicated by the product designation
• Provides a clean fit to prevent unintended airflow bypass at branch endpoints
• Intended for use in HVAC duct distribution assemblies by trade professionals

Compatibility

Designed as an OEM-style end cap for use with Series 88, 18-inch tee fittings in HVAC duct distribution applications.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal contractor. Before installing or servicing any duct fitting, shut down the air handling unit and confirm the system is depressurized. Secure the end cap per the fitting manufacturer's guidelines using appropriate fasteners or sealant as required by local mechanical codes. Verify the installed cap is fully seated and sealed before returning the system to operation.

Technical Specifications

• Size: 18 inches
• Series: 88
• Type: Tee End Cap

Standard Information

• Brand: AIR FLOW PRODUCTS
• Manufacturer Part Number: EC18