4 inch is one of the larger sizes in this exhaust bellows range. Beyond the standard overall length, bellows length and end dimensions can be adjusted to suit the available installation space. Different lengths can also be supplied around the same 4 inch connection size, making it easier to build out common SKUs for different exhaust layouts. For other diameters, materials, and structural options, explore our complete
Exhaust Bellows range. If you are still comparing diameter, length, or bellows construction for your piping system, see our
Exhaust Bellows Selection Guide.