SWBE4106 4X10X6" Galvanized Sheet Metal End Boot. Southwark Metal Manufacturing Company has an extensive line of high-quality sheet metal products designed to improve residential, remodel and light commercial HVAC (heating, ventilation, and air conditioning) systems. This SWBE4106 4X10X6" Galvanized Sheet Metal End Boot is designed to easily transition airflow from round flexible and/or hard duct to a rectangular register or grille. This skinny and long end boot provides users with the ability to install the boot in ceilings, walls, floor trusses and TJI's. The SWBE4106 4X10X6" Galvanized Sheet Metal End Boot, along with proper ducting, will cut down on HVAC cost, and improve your systems overall performance and efficiency. This product is backed by Southwark's limited 10 year warranty.