Seal-tite 3172B-061207 Straight Boot 6x12 to 7 in 30 Ga

Product Description

The SEAL-TITE 3172B-061207 is a 30-gauge sheet metal straight boot designed to transition ductwork from a 6-inch by 12-inch rectangular opening to a 7-inch round collar. Straight boots of this type serve as the final connection point between rectangular trunk duct and round branch duct runs, directing conditioned air toward registers or grilles. The 30-gauge construction provides the structural rigidity needed to hold shape during installation and through normal system operation. HVAC installers and sheet metal mechanics work with this fitting on residential and light commercial forced-air systems.

This boot is suited for new construction and retrofit applications where a rectangular-to-round transition is required at the supply or return plenum takeoff. The 6-inch by 12-inch rectangular end is sized for common trunk duct branch openings, while the 7-inch round collar connects directly to standard round flex duct or rigid round pipe. It is typically installed at a horizontal or vertical duct-to-register transition point in residential forced-air heating and cooling systems.

Key Features

• 30-gauge sheet metal construction for rigid, durable fitment
• Rectangular 6 inches by 12 inches inlet mates to standard trunk duct openings
• 7-inch round collar outlet connects to standard round duct or flex duct
• Straight-boot configuration allows direct, low-restriction airflow path
• Designed for supply or return branch duct terminations

Compatibility

Designed as an OEM-style sheet metal fitting for use with standard residential and light commercial forced-air duct systems requiring a rectangular-to-round straight boot transition.

Installation Notes

Installation is performed by licensed HVAC technicians or qualified sheet metal mechanics. Power down the air handling unit and verify the system is de-energized before working on the duct system. Seal all joints with listed duct mastic or UL 181-rated tape per applicable mechanical codes. Secure the round collar to connecting duct with sheet metal screws at a minimum of three points around the circumference.

Technical Specifications

• Rectangular Inlet Size: 6 inches x 12 inches
• Round Outlet Size: 7 inches
• Gauge: 30 GA
• Boot Style: Straight

Standard Information

• Brand: SEAL-TITE
• Manufacturer Part Number: 3172B-061207