Gray North 3×12 to 7″ Wall Stack Boot Center End 12X3X7-112S

3×12 to 7″ Center End Wall Stack Boot – MFG# 12X3X7-112S

This 3″ x 12″ to 7″ round center end wall stack boot is designed to transition from a rectangular wall register opening to a 7″ round duct connection in residential HVAC systems.

The center end configuration allows for compact wall cavity installation while maintaining smooth airflow from the round duct to the wall register.

Constructed from durable galvanized steel for long-term performance.

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Key Features & Benefits:

✔ 3″ x 12″ rectangular register opening
✔ 7″ round duct connection
✔ Center end stack design
✔ Galvanized steel construction
✔ Ideal for wall supply applications
✔ Installer-friendly configuration

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Ideal Applications:

• Residential wall supply registers

• Remodel & retrofit HVAC installs

• New construction duct systems

• Transition from 7″ round duct to wall grille

Pairs well with:

• 7″ insulated flex duct (R6 / R8)

• 7″ rigid round pipe

• 3×12 wall registers

• Worm gear clamps

• HVAC foil tape

Designed for HVAC professionals needing reliable wall register transitions.

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.