All of our multiply stainless steel flex bellows are manufactured with a solid, directional stainless steel inner liner to help improve air flow without sacrificing flexibility. Our current line of Exhaust Flex Bellows includes the following sizes:
| Size (Inside Diameter x Overall Length) | Solid Inner Liner | Stock Status | Available Material(s) |
| 1.500" ID x 2.500" Long | Yes | In Stock | 304 Stainless |
| 1.750" ID x 2.500" Long | Yes | In Stock | 304 Stainless 321 Stainless |
| 1.875" ID x 2.500" Long | Yes | In Stock | 304 Stainless |
| 2.000" ID x 2.500" Long | Yes | In Stock | 304 Stainless |
| 2.250" ID x 2.500" Long | Yes | In Stock | 304 Stainless |
| 3.000" ID x 4.000" Long | Yes | In Stock | 304 Stainless 321 Stainless |
| 3.500" ID x 4.000" Long | Yes | In Stock | 304 Stainless |
| 4.000" ID x 4.000" Long | Yes | In Stock | 304 Stainless |