Seal-tite 1278-24-041206 Straight Register Boot 4x12 24in Rails

Product Description

The SEAL-TITE 1278-24-041206 is a straight register boot designed for basement and ceiling duct termination applications in residential HVAC systems. This boot transitions ductwork to a 4 x 12 inch register opening and ships with 24-inch rails that simplify positioning and securing the unit during rough-in or retrofit installations. HVAC installers and sheet metal contractors use this style of boot where a flush, low-profile register connection is required at floor or ceiling level. The straight-through configuration keeps airflow direct and minimizes static pressure drop at the supply outlet.

This register boot is suited for new construction and remodel projects where basement ceilings or overhead supply runs terminate into a standard 4 x 12 inch register. The 24-inch integrated rails provide additional support for securing the boot to framing or duct board, making it a practical choice for installations where access is limited and a stable, square fit is needed before the register grille is set.

Key Features

• Straight boot configuration for direct duct-to-register connections at basement or ceiling locations
• 4 x 12 inch register opening fits standard residential supply registers of that face size
• 24-inch rails included to aid alignment and secure mounting during installation
• Low-profile straight design supports efficient airflow with minimal pressure loss
• Compatible with both new construction rough-in and retrofit duct replacement work

Compatibility

Designed as an OEM-style replacement and new-installation register boot for residential forced-air HVAC systems requiring a straight 4 x 12 inch basement or ceiling supply boot with rail support.

Installation Notes

Installation is typically performed by a licensed HVAC technician or sheet metal contractor. Shut down the air handling system and confirm the unit is de-energized before beginning any duct work. Secure the boot to framing or duct board using the provided rails, and seal all joints with listed duct sealant or UL 181-rated tape per local mechanical code requirements. Verify the register opening is square and flush before setting the final grille or diffuser.

Technical Specifications

• Boot Type: Straight
• Register Opening Size: 4 x 12 inches
• Rail Length: 24 inches
• Application: Basement and Ceiling Supply Register

Standard Information

• Brand: SEAL-TITE
• Manufacturer Part Number: 1278-24-041206