Hi Craig, I was able to find the product dimensions which are 30.5 x 10.7 x 4.8 inches but, no information about the diameter of the outside vent hose as this is a direct-fit replacement for the specified vehicle applications. We can only guarantee fitment based on our application guide. Please enter your vehicle’s year, make, model, sub-model, and engine type, and type the part's name in the search box. Once your application is selected, you’ll see a “Guaranteed to Fit” badge if the part will fit, and we recommend that you also double-check Your Vehicle Fit Details as well as the Vehicle Fitment Information table on the product page.