Viessmann CU3A 45/57 - 3'' Air Intake and 4" Exhaust to 4''/6'' Concentric Adaptor

Seamlessly transition from InnoFlue Single Wall to InnoFlue Concentric with InnoFlue Viessmann CU3A Concentric Adaptors. Meet any venting requirements and effortlessly manage any unforeseen obstacles with versatile adaptor that maximizes the best options from two different InnoFlue product families. Rated to Rated to 230°F (110°C), InnoFlue Concentric Adaptors are a user-friendly option that has been evaluated to UL1738 and ULCS636 by ICC.

• Approved by Viessmann.
• Configurable options easily handles any obstacles and allows for maximum versatility.
• Evaluated to UL1738 and ULCS636 by ICC.
• Installs quickly & easily without glues, primers, or solvents.
• Rated to 230°F (110°C). "