A fiber splice enclosure for fusion splices or mechanical splices of optical fibers includes a splice tray, including a splice retainer having a main body and retainer space in the body, an open extent along a surface of the body to receive a splice connection, and a mounting bracket holds the splice retainer with the open extent facing a wall for cooperation with the wall to retain a splice connection in the retainer space. The mounting bracket may be resilient for bending away from the wall to expose a retainer space for insertion or withdrawal of a splice connection.A method of positioning a fiber splice connection relative to a splice tray includes bending the mounting bracket to move the splice retainer from the wall to access retainer space in the splice retainer, and positioning a splice connection in or removing it from the retainer space.