Spec Sheet Duro Dyne introduced the 22 oz Excelon several decades ago. The Excelon of today is the FFF—at 17 oz it’s lighter than the original but it has the same tear and tensile strength and UL Listing as the Original MBX. To the user, it’s also stronger and more pliable than the stiffer Original MBX which has to be stretched all the way out before placed in a Hand Brake to avoid splitting. Item Codes: DDTDCTDFFFF Duro Dyne TDC/TDF 4″ x 4″ x 4″ #10267 (17 oz Excelon canvas) DDTDCTDF TDC/TDF 4x4x4 Excelon Connector #10210 MBX444 (20 oz Excelon canvas) DMVPFLEX444 Ductmate Proflex 4″ x 4″ x 4″ #PFC4VSGA DMPFCST3VSGA Ductmate Proflex Single Fold Seam 4″ x 4″ x 4″ #PFCST3VSGA DDMBXAL444 MBXAL-100 4x4x4 Aluminum Flex Connector 100’/Roll #10258
