Endress+Hauser PROWHIRL 72. 72F40-SK0AA1AAB4AW. New Old Stock, New Never Used. Surplus Inventory. I have four of these units. One is open box and the other three are in Factory sealed boxes. The boxes may be dusty and show minor wear from age, storage and transportation. I will ship the open box unit last, after the three factory sealed units are sold. Buyer Responsible For Suitability Of Use. No Returns, Buyer Pays Shipping. I also have four 72F50's in another listing.