These multi-size flow-through plugs are designed to be inflated in multiple pipe sizes with a bypass feature to allow fluid to pass through it by removing the center cap. With the bypass cap secured, it serves as a conventional pipe plug. Made in the USA.
![Multi-Size Flow-Through Sewer Plug - [18"-30" (actual size 16.5"-30")]](https://d2j6dbq0eux0bg.cloudfront.net/images/7009010/301161593.jpg "Multi-Size Flow-Through Sewer Plug - [18\"-30\" (actual size 16.5\"-30\")]")
