Imperial Angle Boot, Right-Angle Transition From Round Pipe, Galvanized Steel, 90-Degree, 4 x 10-in, 5-in Diameter

The Imperial Angle Boot, Right-Angle Transition From Round Pipe, Galvanized Steel, 90-Degree, 4 x 10-in, 5-in Diameter, makes connecting round pipe to a register or grille quick and easy. The galvanized steel boot provides a right-angle 90-degree transition for a 5-inch (12.7 cm) round pipe or insulated flexible duct to a 4 x 10-inch (10 x 25.4 cm) register or grille opening. Simply connect the round pipe or duct to the boot and secure the register or grille for a professional installation that allows airflow through the register in an efficient manner.