Southwark Metal ATD444 Air-tite Takeoff 4 Inches Collar with Model 44 Damper

Product Description

The Southwark Metal ATD444 is a 4-inch Air-Tite Takeoff with an integrated Model 44 damper. It is designed for use in residential and light commercial HVAC duct systems. HVAC installers and sheet metal contractors use this type of takeoff fitting to branch airflow from a main trunk duct to a smaller supply duct or boot. The Air-Tite design creates a tight, sealed connection that minimizes air leakage and improves system efficiency. This unit is fabricated from hot-dipped galvanized steel per ASTM A653 CS Type B, which provides strong corrosion resistance in both conditioned and unconditioned spaces. The 28-gauge galvanized steel construction keeps the unit lightweight while maintaining structural integrity during installation and long-term use. The collar measures 4 inches in diameter and includes a 5 and 3 quarter inches tube length with a 1 and 1 half inches crimp length for a secure fit into standard duct openings. A neoprene foam gasket that is 1 and 1 half inches wide and 1 eighth inches thick is included. This gasket features a high-tack adhesive backing that bonds directly to the duct surface, creating an airtight seal without additional sealant. The unit comes with 4 pre-drilled screw holes for fast and consistent mechanical fastening. The built-in damper is made from 26-gauge steel with an 18-gauge handle. The handle is secured with a wingnut and locking mechanism, allowing technicians to manually adjust or shut off airflow to individual zones or rooms. This pressure-rated fitting is rated at plus or minus 4 inches w.g., making it compatible with standard forced-air residential duct systems. The flanged collar design ensures the takeoff seats flush and flat against the trunk duct. This product is manufactured in the USA and is sold as an individual unit. It is suitable for use in new construction and retrofit HVAC projects where controlled airflow distribution is required.

• 28-gauge hot-dipped galvanized steel construction per ASTM A653 CS Type B for corrosion resistance
• Integrated 26-gauge damper with 18-gauge locking handle and wingnut for manual airflow control
• Adhesive-coated neoprene foam gasket and 4 pre-drilled screw holes for a fast, airtight installation

Product Highlights

The Southwark Metal ATD444 delivers a sealed, pressure-rated 4-inch duct takeoff with a built-in adjustable damper, making it a reliable choice for HVAC professionals installing or retrofitting forced-air distribution systems.

Product Information

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: ATD444

Technical Specifications

• Diameter: 4 inches
• Gauge: 28 GA
• Material: Galvanized Steel
• Tube Length: 5.75 inches
• Crimp Length: 1.5 inches
• Gasket Width: 1.5 inches
• Gasket Thickness: 0.125 inches
• Pressure Rating: +/- 4 inches w.g.
• Flanged: Yes
• Galvanized: Yes
• Pre-Drilled Screw Holes: 4
• Height: 6 inches
• Length: 7 inches
• Width: 7 inches
• Weight: 0.58 pounds
• Country of Origin: USA
• Prop 65: Yes
• Unit of Measure: Each