Boeser Sheet Metal Modified AlterAir Boot Kit with 25 x 10 In. Boot, 3 Way Canvas, 6 Ft. Duct, Slips, and Drives - Fits 20 x 25 x 1-5 In. Media Breadcrumb Home / Products / Parts / Installation Products / Sheet Metal Ductwork and Fittings / Sheet Metal Boots / AlterAir Boots Loading... Customer Part Number: 7382510 Brand: Boeser Sheet Metal Shape: Rectangular