A vibration isolator for insertion into a support structure opening includes a first isolator body having a first body portion at a first body end and a first isolator wall extending from the first body portion toward a second body end. The first body portion has a larger perimeter than the second body end and defines a first fastener opening and the second body end defines a second fastener opening. The second fastener opening has a perimeter greater than the perimeter of the first fastener opening. The first body portion has a perimeter that is at least three times greater than the perimeter of the first fastener opening and at least two times greater than the perimeter of the support structure opening.