Seal-tite 3172B-14X14X12 Insulated Ceiling Box 14x14x12

Product Description

The SEAL-TITE 3172B-14X14X12 is an insulated ceiling box designed for use in residential and light commercial HVAC applications. It provides a thermally insulated plenum transition point at the ceiling, separating conditioned air supply or return from the unconditioned attic or plenum space above. Measuring 14 inches by 14 inches by 12 inches, this ceiling box is sized for standard residential duct openings. HVAC installers and sheet metal contractors use this box to reduce thermal gain and prevent condensation at ceiling penetrations.

This insulated ceiling box is typically installed where a supply or return air duct terminates at the ceiling plane, particularly in attic-fed duct systems common in single-story residential construction. The 14 x 14 inch footprint accommodates standard register or grille openings, while the 12-inch depth provides adequate clearance for insulation and duct connection above the ceiling line. It is suited for new construction and replacement installations.

Key Features

• Insulated construction reduces thermal transfer at the ceiling penetration
• 14 x 14 inch opening fits standard ceiling register and grille sizes
• 12-inch depth accommodates duct connection and insulation clearance above the ceiling
• Designed for attic-fed residential supply and return air applications
• OEM-style replacement form factor for simplified installation

Compatibility

Designed as an OEM-style replacement insulated ceiling box for residential HVAC duct systems requiring a 14 x 14 inch ceiling opening with a 12-inch box depth.

Installation Notes

Installation is typically performed by a licensed HVAC technician or sheet metal contractor. Shut down the air handling system and de-energize all associated equipment before beginning work at the ceiling penetration. Seal all joints between the ceiling box and surrounding ceiling material per local energy codes to prevent air bypass into the unconditioned space. Follow local mechanical and building codes for insulation requirements above the box.

Technical Specifications

• Opening Dimensions: 14 x 14 inches
• Depth: 12 inches
• Insulation: Insulated construction

Standard Information

• Brand: SEAL-TITE
• Manufacturer Part Number: 3172B-14X14X12