These types of Square Shaped Bellows are made in various cross section Rectangular, Square Bellows any polygon both in straight and tapered versions depending upon the exhaust cross sectional area through which air passed out. Rubber Bellows | Rubber Expansion Bellows | Expansion Bellows | Neoprene Rubber Bellows | Non Metallic Bellows | Rubber Bellows , Industrial Rubber Bellows , Silicone Rubber Bellows , Hypalon Rubber Bellows , Neoprene Rubber Bellows , Butyl Rubber Bellows , Leather Bellows , Foam Leather Bellows , Fabric Bellows , High Temperature Fabric Bellows, Ceramic Fabric Bellows , Rubber Coated Fabric Bellows , Industrial Rubber Coated Fabric Bellows , Glass Fabric Bellows , Canvas Bellows , Hexagonal Bellows , Rexine Bellows