Seal-tite 1728-10 Spin-in Collar 10 in Tab Mount with Damper

Product Description

The SEAL-TITE 1728-10 is a round duct board spin-in collar designed to create a 10-inch branch take-off connection for round pipe or flexible duct. It installs by inserting into a field-cut opening in duct board and securing with integral tabs that grip the board for a stable, low-profile mount. A built-in damper blade allows airflow volume adjustment directly at the take-off point, making system balancing straightforward without additional hardware. HVAC installers and sheet metal mechanics use this collar during new construction and retrofit work on duct board air distribution systems.

This collar is suited for residential and light commercial HVAC applications where duct board is the primary distribution material. The tab-mount design eliminates the need for screws or sheet metal screws through the duct face, allowing faster installation while maintaining a secure fit. The integrated damper makes it practical for multi-branch supply systems where each outlet requires individual airflow control to meet design CFM targets at registers and diffusers.

Key Features

• 10-inch diameter round opening for connection to round pipe or flex duct
• Tab-mount design locks into a cut opening in duct board without additional fasteners
• Built-in damper blade allows airflow volume adjustment at the take-off point
• Supports system balancing without installing a separate balancing damper
• Low-profile spin-in collar profile suits standard duct board thickness

Compatibility

Designed as an OEM-style replacement and standard-fit spin-in collar for duct board air distribution systems accepting a 10-inch round take-off connection.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal mechanic. Power down the air handler or furnace at the disconnect before cutting into an existing duct board system. Cut the opening to the correct diameter using a hole saw or duct board knife, insert the collar, and fold the tabs to secure. Verify damper blade operation before connecting flex duct or round pipe and sealing the joint with UL 181-rated tape or mastic per applicable mechanical codes.

Technical Specifications

• Collar Diameter: 10 inches
• Mount Type: Tab Mount
• Damper: Included
• Application: Duct Board Spin-In Take-Off

Standard Information

• Brand: SEAL-TITE
• Manufacturer Part Number: 1728-10