This is a marine quality In Line 4 inch blower that is ideal to bring fresh air into the cockpit of your English car; such as by the drivers; feet in an Austin Healey. It moves 2 or 3 times as much air as a Smiths' or Lucas  blower; is more reliable, OR is also ideal to route into your heater boost your heater output.  (Please note, photo is of a 3 inch blower; 4 inch looks similar) It is US Coast Guard approved; designed to remove fumes from bilge or engine room of a yacht.. Paint it black, put a 4 inch hose on each end; no one will realize it is there.It makes a slight whine due to the high RPM, so fit it in the engine bay; not under the dash I also sell a 3 inch unit; please inquire.Please go to my eBay store, then click on the  the Austin Healey  or MGA section.I have many thousands of original British parts, all marques;  1949-1994, in my Time-warp  SEBRING FLORIDA warehouse, and several hundred on my eBay store, Old English Motor Company. Those are organized into 20 categories, including  Austin Healey. parts.  .. If you do not see what you want; contact me, I will post photos in the store for you.    Please inquire 1954JAGUARS,  or  1954JAGPART.  Shipping in the US is Priority Mail. Please give me your phone number for the box. NOTE,  Overseas shipping is an Estimate; please give me address for correct cost , contact me for shipping cost. .     .Thank you, James Dean, thejaguru.