Air Flow Products 840-3-RATD20-000014 Airtight Takeoff 14 in

Product Description

The AIR FLOW PRODUCTS 840-3-RATD20-000014 is an airtight stick-on takeoff fitting designed for round duct pipe installations that require a built-in damper. This fitting attaches directly to the main trunk or round pipe using an adhesive-backed mounting method, creating a sealed branch connection without the need for cutting large access points. The integrated damper allows the installer to balance airflow to individual zones or rooms. At 14 inches in diameter with a 2-inch standoff, it suits residential and light commercial duct systems where airtight performance and flow control are priorities. HVAC technicians and sheet metal installers are the primary trade audience for this fitting.

This takeoff is suited for residential forced-air HVAC systems and light commercial applications where round duct branch connections must meet airtight standards. The stick-on design simplifies installation on existing trunk lines or new duct runs, reducing labor compared to traditional cut-in fittings. The built-in damper makes it a practical choice for zoning applications or any layout where per-branch airflow adjustment is needed after the system is commissioned.

Key Features

• Airtight construction minimizes air leakage at branch takeoff points
• Stick-on adhesive mounting attaches directly to round pipe without large cutouts
• Integrated damper allows on-site airflow balancing per branch
• 14-inch diameter fits standard round duct trunk and branch configurations
• 2-inch standoff positions the branch connection away from the main pipe surface

Compatibility

Designed as an OEM-style replacement or new-installation fitting for round duct systems requiring an airtight stick-on takeoff with damper.

Installation Notes

Installation is typically performed by a licensed HVAC technician or qualified sheet metal mechanic. Shut down and de-energize the air handling unit before working on the duct system. Ensure the pipe surface is clean and free of dust or grease before applying the adhesive-backed mount to achieve a proper seal. Follow local mechanical codes and SMACNA duct construction standards for duct penetrations and airflow balancing procedures.

Technical Specifications

• Diameter: 14 inches
• Standoff Height: 2 inches
• Damper: Integrated
• Mounting Type: Stick-On Adhesive
• Pipe Type: Round

Standard Information

• Brand: AIR FLOW PRODUCTS
• Manufacturer Part Number: 840-3-RATD20-000014