The NORITZ AMERICA CORP Concentric Wall Thimble is a Builder’s Edition accessory designed for horizontal termination of venting systems. This thimble is constructed from robust materials to withstand high temperatures and ensure safe venting. It features a sleek design that integrates seamlessly with your wall structure, providing a clean finish. The thimble is compliant with ANSI standards, ensuring reliable performance in various installations. Its dimensions are optimized for easy installation with NORITZ tankless water heaters, making it an essential component for efficient exhaust management.