Air Flow Products 840-1-RATD20-000007 Airtight Takeoff 7 in

Product Description

The AIR FLOW PRODUCTS 840-1-RATD20-000007 is an airtight stick-on takeoff fitting designed for round duct pipe with an integrated damper. It mounts directly to the duct surface using an adhesive-backed collar, creating a sealed branch takeoff without the need for sheet metal cutting tools or separate flanges. The 7-inch diameter opening connects to round branch runs, and the 2-inch standoff positions the collar away from the main duct to accommodate insulation wraps or clearance requirements. Licensed HVAC technicians and sheet metal mechanics install this fitting during new duct system construction or retrofit work.

This takeoff is suited for residential and light commercial forced-air HVAC applications where branch duct runs originate from main trunk lines. The stick-on design speeds up installation on insulated or uninsulated round duct without requiring flanged collars or separate damper hardware. The built-in damper allows airflow balancing at the takeoff point, making it practical for zoning adjustments during system commissioning. No specific compatible equipment models were provided in the product data.

Key Features

• Airtight stick-on collar eliminates the need for separate flanges or sealant-heavy connections
• 7-inch round opening for branch duct connections
• 2-inch standoff accommodates duct insulation clearance
• Integrated damper enables airflow balancing at the takeoff point
• Designed for round pipe main trunk installations

Compatibility

Designed as an OEM-style replacement or new-installation takeoff fitting for residential and light commercial round duct systems requiring an airtight branch connection with integral damper control.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal mechanic. Power down and lockout the air handler or furnace before beginning any duct work. Clean and dry the duct surface before applying the stick-on collar to ensure a proper airtight seal. Follow local mechanical codes and SMACNA duct construction standards for branch takeoff placement and damper access requirements.

Technical Specifications

• Opening Diameter: 7 inches
• Standoff Height: 2 inches
• Damper: Integrated
• Pipe Type: Round
• Mount Type: Stick-On Adhesive Collar

Standard Information

• Brand: AIR FLOW PRODUCTS
• Manufacturer Part Number: 840-1-RATD20-000007