Imperial 24 Ga. Galvanized Increaser, 6 In. x 8 In. is an efficient solution for increasing the diameter of galvanized round perimeter pipes. This increaser is specifically designed for use with single-wall pipes, allowing you to easily and effectively expand the pipe’s diameter to add flexibility to your HVAC or ventilation system setup. The larger end of the increaser is crimped, ensuring a secure and leak- connection with the existing pipe, making installation straightforward and reliable. Model Number: GV1360