Air Flow Products 84RAT04 Stick-on Takeoff 4 Inches

Product Description

The AIR FLOW PRODUCTS 84RAT04 is an airtight stick-on takeoff fitting designed for round duct pipe. It provides a sealed branch connection point on round ductwork without requiring sheet metal cutting tools or crimping equipment at the takeoff location. The self-adhesive mounting design allows the fitting to bond directly to the duct surface, forming an airtight seal that reduces conditioned air leakage at branch connections. HVAC installers and sheet metal mechanics use this fitting during new duct installations and duct modification work on forced-air systems.

This fitting is suited for residential and light commercial forced-air HVAC ductwork where round branch takeoffs are required. It is commonly installed on main trunk lines or large-diameter round runs to serve individual supply branches. The 4-inch round opening matches standard 4-inch round duct and flex duct connections used throughout residential supply distribution systems.

Key Features

• Airtight adhesive mounting eliminates the need for additional sealant at the takeoff face
• Stick-on installation reduces labor time compared to traditional cut-in collar methods
• 4-inch round outlet connects directly to standard 4-inch round duct or flex duct
• Round profile fits standard round pipe without adapters

Compatibility

Designed as an OEM-style replacement and new-installation fitting for standard round forced-air supply ductwork systems.

Installation Notes

Installation is performed by licensed HVAC technicians or qualified sheet metal mechanics. Shut down the air handler and ensure the system is depressurized before cutting into any duct section or attaching the fitting. Clean and dry the duct surface thoroughly before applying the adhesive backing to ensure a proper airtight seal. Follow local mechanical codes and SMACNA duct construction standards for branch takeoff placement and spacing.

Technical Specifications

• Outlet Size: 4 inches
• Outlet Shape: Round
• Mounting Type: Stick-On Adhesive
• Seal Type: Airtight

Standard Information

• Brand: AIR FLOW PRODUCTS
• Manufacturer Part Number: 84RAT04