Gray North 7″ Straight Starting Collar w/ Damper MFG#7-326 HVAC

7″ Straight Starting Collar with Built-In Damper

Gray North | MFG# 7-326 | Galvanized Steel HVAC Fitting

This 7-inch straight starting collar with integrated manual damper is designed for professional HVAC installations requiring precise airflow control at branch duct connections.

Manufactured from corrosion-resistant galvanized steel, this collar provides a secure transition from trunk duct to 7″ round branch duct while allowing on-site air balancing via the built-in adjustable damper lever.

Key Features:

• 7″ Inside Diameter (ID)

• Integrated Manual Balancing Damper

• Easy-Access Adjustment Lever

• Crimped Edge for Quick Slip-Fit Installation

• Heavy-Duty Galvanized Steel Construction

• Ideal for Supply or Return Air Systems

Applications:

• Residential HVAC branch runs

• Commercial duct balancing

• Air distribution system zoning

• Metal round duct installations

The adjustable damper allows technicians to fine-tune airflow without additional balancing hardware, improving system efficiency and comfort control.

Perfect for HVAC contractors, sheet metal installers, and ventilation professionals.

Important Notice – Propane Parts, Accessories, and Regulators

This product, including but not limited to propane parts, accessories, fittings, hoses, valves, and regulators, must be installed and serviced by a licensed professional in accordance with all applicable local, state, and federal codes, regulations, and standards.

The seller assumes no responsibility for the installation, inspection, application, maintenance, or use of this product.

It is the sole responsibility of the buyer to ensure the product is appropriate for their intended application and that it is installed correctly by a qualified individual.

Improper installation, maintenance, or use of propane products may result in serious injury, death, fire, explosion, or property damage.

The buyer accepts all risks, liabilities, and potential consequences associated with the use of this product.

By purchasing this item, the buyer acknowledges that they have read, understood, and agreed to these terms and confirm that installation and use will be conducted by a properly licensed and qualified professional.