Mountain Safety Research MSR Heat ExchangerMade in USAThese are new!You will receive an unopened one.I am able to sell these at this price because I purchased them in bulk. The label and plastic bag are a bit rough but intact as seen in the pictures Product Description:Stove pot heat exchangers are a cooking pot's equivalent to the insulation found around Thermoses. They are designed to trap heat close to the vessel to not only keep the contents warm, but in the case of cooking, increase fuel efficiency by decreasing the amount of heat and energy lost during stove operation. The unique waffled design channels the heat from the stove up the sides of the pot to increase the heated surface area. The MSR Heat Exchanger is made from gold tinted, lightweight metal (possibly aluminum) that has been given a corrugated shaping. The circular shape is held true by a metal bracing that encircles it. There are eyes every 6 in (15.2 cm) that serve to hold the brace onto the corrugated metal. On one side of the frame, there is a latch that can attach to one of two eyes on the opposing end of the heat exchanger depending on what size pot is being used. The thumb wheel then secures the heat exchanger to the pot being used. The manufacturer claims the product will fit all MSR 1.5 L and 2 L pots (up to 7 in or 17.8 cm diameter) with the exception of the 1.5 L Titan pot. All together, the entire unit is a mere 6 oz (170 g). MSR also claims that the corrugated design of the Heat Exchanger increases stove efficiency by up to 25% by channeling the heat from the stove up the sides of the pot. Multi-Use: When used with liquid fuel stoves, or those like the WindPro stove with remote burners, it can act as a wind block by extending below the pot.SPECIFICATIONSWeight: 6 oz./170 gWidth: 8 in / 20.3 cmLength: 8 in / 20.3 cmHeight: 3.75 in / 9.5 cmSMOKE FREE Please read all terms before purchase or bidding! SMOKE FREEALL ITEMS ARE SOLD AS-IS...BUYER WILL RECEIVE WHAT IS SHOWN. ANY PICTURES ARE CONSIDERED AS PART OF THE DESCRIPTION AND SHOULD BE USED AS AN AID IN DETERMINING WHAT IS INCLUDED AND ITEM CONDITION. ALL CONCERNS SHOULD BE ADDRESSED PRIOR TO ANY OFFER / PURCHASE. HOWEVER, IF you EVER have a problem with one of my items, please let me know before you leave feedback and I will do everything I can to make it right. I value my customers and want them to be happy. I HAVE 100% POSITIVE FEEDBACK.Checkout: Please be sure to use eBay's checkout within 5 days of the end of the auction, regardless of how you are paying so that we know how payment is being sent and can get your item(s) ready for shipment. After 5 days if we have not heard from the buyer or winning bidder we will be filing an unpaid report, which we do not like to do.Payment: PAYMENT IS TO BE RECEIVED WITHIN 5 DAYS OF ITEM END DATE. PAYPAL IS THE ONLY FORM OF PAYMENT ACCEPTED.Shipping: WE SHIP WITHIN THE U.S.ONLY. Please make sure your address is correct before bidding. If your address is not correct, please notify us right away. If it does get returned to us and you still want the item you will have to repay the shipping cost, unless it is an error on our part. So again, please make sure your address is correct. Please use the shipping calculator to figure out your shipping cost will be. ALL ITEMS ARE SHIPPED TO THE BUYER'S CONFIRMED PAYPAL ADDRESS ONLY. ABSOLUTELY NO REDIRECTED SHIPPING...NO EXCEPTIONS. Feedback: We leave feedback promptly upon delivery of the item and we appreciate if you would do the same for us when item(s) arrive so that we know everything is acceptable. If there is a problem, please let us know BEFORE you leave feedback so we can try to correct it to the best of our ability.Combined Shipping: Remember, we do combine shipping for those items that don't have Free shipping. You pay for the actual shipping cost of all items combined, not the shipping cost if each item was mailed separately.