Read more 48″ Downspout Boot for 4″ Downspout, Aluminum The 48″ downspout boot is designed to enhance the appearance of an underground drain tile connection. Casting in heavy metal insures years of daily wear and tear in high traffic areas. Converters are available to transition rectangular 3″ x 4″ downspout into the 4″ boot. Aluminum is chromated and needs to be painted. Please call for pricing and lead time (an additional 4 to 8 weeks may be required).