Seal-tite 3172B-12X12X10 Insulated Ceiling Box 12x12x10 in

Product Description

The SEAL-TITE 3172B-12X12X10 is an insulated ceiling box designed for use in HVAC duct termination applications where air sealing and thermal performance at the ceiling plane are required. Measuring 12 inches by 12 inches with a 10-inch depth, this ceiling box provides a thermally insulated enclosure that helps reduce energy loss and condensation at ceiling penetrations. It is a component typically installed by HVAC technicians and sheet metal contractors during new construction or system retrofit work where code-compliant air barriers are needed at ceiling-level supply or return openings.

This insulated ceiling box is suited for residential and light commercial HVAC installations where diffusers or grilles terminate at an insulated ceiling assembly, such as in dropped ceiling systems, attic-adjacent spaces, or conditioned-to-unconditioned zone transitions. The 12 by 12 inch face accommodates standard grille and diffuser sizes in that nominal range, and the 10-inch box depth provides clearance for insulation contact applications above the ceiling plane.

Key Features

• Insulated construction limits thermal bridging and condensation at ceiling penetrations
• 12 by 12 inch face opening fits standard nominal grille and diffuser sizes
• 10-inch depth accommodates insulation contact above the ceiling plane
• Designed for ceiling-level duct termination in residential and light commercial systems
• Supports code-compliant air sealing at conditioned-to-unconditioned ceiling transitions

Compatibility

Designed as an OEM-style ceiling box for use with standard 12 by 12 inch HVAC diffusers and grilles in insulated ceiling assemblies.

Installation Notes

Installation is typically performed by a licensed HVAC technician or sheet metal contractor. Power down the air handling system before beginning any ductwork modification or ceiling box installation. Ensure the box is properly sealed at the ceiling plane to meet local energy code requirements for air barriers in attic or unconditioned space transitions. Follow applicable IECC and ASHRAE 62.2 guidelines for air sealing at ceiling penetrations.

Technical Specifications

• Face Dimensions: 12 inches x 12 inches
• Box Depth: 10 inches
• Insulation: Insulated construction

Standard Information

• Brand: SEAL-TITE
• Manufacturer Part Number: 3172B-12X12X10