EZTR – Are there any other manufacturer’s parts that I can use instead of the N-flex kit? No. There are no other approved kits for the unit. You must use the N-flex kit. Updated on April 14, 2021 Tagged: EZTR Was this article helpful? Yes No Related Articles What’s the difference between EZ and EZTR? Installing the EZ Flex Vent EZTR – Can the EZTR be common vented? EZTR – Can I install a rain cap from a manufacturer different than the original B-vent manufacturer? EZTR – Should I caulk the Top Flex Support or Diffuser Gasket? EZTR – The flex vent was cut too short. What can I do?