Uniheat Shipping Warmers are the first warmers designed especially for small pets, tropical plants and other temperature sensitive products.To protect products from cold weather, API designed a complete shipping line that includes 20 , 30 , 40 , 60,72 and 96 hours warmers. API has been serving clients for over a decade and prides itself on high quality, competitive prices and customer service. Designed for reliable and steady heat release for 40 hours…Excellent Heat Pack for shipping live corals, insects, reptiles, fish, flowers, etc.Provides an average warmer surface temperature of 100 degrees Fahrenheit.Works better than 30 Hour Heat Pack for live corals & fish because it is a more even heat with less peak temperature and the consistent heat lasts longer.\r\n\r\nBest for longer than one day shipping by mastercarton or larger packages\r\nSteady and deliberate heat release within the first2-4 hours, followed by a gradual heat increase\r\nSpecially designed for shipping pets from warm tocold regions\r\nHeat Pack size 4\” x 5.5\”\r\n240 pcs. per carton (10 pcs./bag x 24 bags)\r\n\r\nWarmer MAY STOP working if temps inside the shipping box or area falls below 32 degrees F\r\n\r\n\r\n\r\nUniheat Expiration Dates\r\n2027″ } Reviews There are no reviews yet. Be the first to review “10 Pack (40 Hours) Uniheat Heat Pack Shipping Warmer – Uniheat” Cancel replyYour email address will not be published. Required fields are marked *Your rating * Rate… Perfect Good Average Not that bad Very poor Your review *Name * Email * Save my name, email, and website in this browser for the next time I comment.