
Blackmer 903523 Locknut LP Gas Propane Pump OEM Shaft Retainer
Part/SKU: 903523
$14.66
Only 2 left in stock
Available to order: 2.
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Request this quantity →This 3″ x 12″ x 30″ Wall Stack Duct is designed for efficient air transfer between floor registers and wall cavity duct systems. Manufactured from durable galvanized steel, it offers long-lasting corrosion resistance and structural integrity for residential or commercial HVAC installations.
Ideal for connecting 12″ x 3-1/4″ register boots to vertical duct runs, this wall stack provides smooth airflow and secure transitions within framed wall cavities.
Heavy-duty galvanized steel construction
Standard 12″ x 3-1/4″ rectangular profile
30″ length for extended wall applications
Designed for floor register to wall cavity transitions
Compatible with standard HVAC duct boots and register boxes
Suitable for new construction or retrofit installations
Built for contractors and HVAC professionals who require reliable airflow performance and code-compliant duct components.
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.
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