Seal-tite 301-05 Stick-on Takeoff Collar 5 Inch

Product Description

The SEAL-TITE 301-05 is a round stick-on takeoff collar designed for residential and light commercial duct systems. Fabricated from 26-gauge galvanized sheet metal, this fitting attaches directly to flat duct board or sheet metal plenums using a peel-off adhesive backing, eliminating the need for mechanical fasteners during initial attachment. The 5-inch twist-lock collar features a hemmed edge, an engineered throat and radii for improved airflow transition, and a fully closed corner with a double-lapped, mechanically seamed joint for added structural integrity. Licensed HVAC technicians and sheet metal mechanics use this fitting to branch supply air from trunk ducts or air handler plenums.

The 301-05 is suited for trunk-and-branch duct systems in residential new construction and retrofit applications. The peel-off adhesive simplifies placement on duct board plenums, while the hemmed 5-inch collar accepts standard round duct and flex duct connectors. This fitting is commonly installed at the plenum face where individual branch runs originate, providing a clean, sealed transition point. Its construction meets the requirements of several widely referenced energy and mechanical codes and standards applicable to forced-air duct system assemblies.

Key Features

• Peel-off adhesive backing for direct attachment to duct board or sheet metal plenums without additional fasteners
• 26-gauge galvanized sheet metal construction for corrosion resistance and rigidity
• Hemmed collar edge reduces sharp edges and provides a secure fit for round duct connections
• Engineered throat and radii promote smooth airflow transition into the branch run
• Fully closed corner with double-lapped, mechanically seamed joint for structural integrity and air sealing
• Meets CCR/Title 24, IECC, HARDI, ACCA, AHREXPO, and ADI applicable standards

Compatibility

Designed as an OEM-style sheet metal fitting for use with 5-inch round duct and flex duct branch connections in forced-air supply duct systems.

Installation Notes

Installation is typically performed by a licensed sheet metal mechanic or HVAC technician. Shut down the air handler and confirm the system is de-energized before cutting into any existing plenum or duct surface. Ensure the plenum surface is clean and free of debris before applying the adhesive backing to achieve a proper seal. Supplement with mastic sealant or UL 181-rated tape at the collar joint as required by local mechanical codes.

Technical Specifications

• Size: 5 inches
• Collar Type: Round, Twist
• Material: Galvanized Metal
• Material Thickness: 26 Gauge
• Series/Model: 301
• Applicable Standards: CCR/Title 24, IECC, HARDI, ACCA, AHREXPO, ADI
• Inclusions/Features: Peel Off Adhesive, Hemmed Collar, Fully Closed Corner, Engineered Throat and Radii, Double Lapped, Mechanically Seamed Corner and Joint

Standard Information

• Brand: SEAL-TITE
• Manufacturer Part Number: 301-05