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12×12 to 10″ HVAC Diffuser Box Square to Round Duct Adapter

SKU: 12X12X10-320

$23.30

Only 2 left in stock

Same-item volume pricing
QuantityUnit priceSaving
1–4$23.300%
5–9$22.145%
10+$20.9710%

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Available to order: 2.

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Overview

This 12×12 to 10″ Square-to-Round Diffuser Box is designed to convert a standard 12” x 12” ceiling diffuser opening to a 10” round duct connection.

Constructed from durable galvanized sheet metal, this transition box provides a secure and efficient airflow path between ceiling diffusers and round ductwork. Ideal for residential and commercial HVAC installations.

Key Features:

  • 12″ x 12″ square diffuser opening

  • 10″ round duct connection

  • Heavy-duty galvanized steel construction

  • Corrosion-resistant finish

  • Easy installation into HVAC systems

  • Compatible with standard round duct pipe

Perfect for HVAC contractors, installers, and ventilation upgrades requiring square-to-round transitions.

Designed for long-lasting performance in supply or return air applications.

Product details

Part / SKU 12X12X10-320

Package includes

  • 12×12 to 10" HVAC Diffuser Box Square to Round Duct Adapter

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.

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