1.FM Approved Adjustable Joint for Deformation Joint 2.Floating Flanges (Optional) 3.Flexible and absorb vibrantion and noise FM Approved Stainless Steel Ajuststable Joint for Deformation Joint 1.FEATURESa.Use OMEGA bellows which minmize material stress.b.Floating Flanges for Optioanl2.CONSTRUCTION:Flange:One side is fixed ,another is active,or both is active,or both fixed. ...