store, ship, and transfer delicate, sensitive articles between soft elastic membranes #139-56 shownholding silicon chips #139-63 double hingedwith one yellow clip #139-58 double hingedwith one yellow clip, shownholding a silicon wafer #139-66 and #139-67double hinged withtwo yellow clips NEW Square Membrane Boxes#139-68, #139-69, #139-70one part with single hinge at back #139-51 and #139-52two separable parts held togetherwith two clear clips, 180° apart #139-61 separable membrane lid that forms asnug fit when pushed/snapped onto the membranebase. No hinges, latches or clips are used. Pressboth sides to un-snap and remove lid. Polystyrene Plastic Boxes with micro thin, flexible polyurethane membranes top and bottom. The plastic membranes form around an enclosed object and hold it securely for storage and transport. Firmly hold small products or large within the wide assortment of box sizes available. Use with semiconductor and machine parts, electron microscopy parts or materials, samples, and many other applications. One part and separable two part Membrane Boxes available. Boxes are single or double hinged, with clip or pressure closure. Replacement Clips & Hinges also available. Note: Membrane area listed below is actual area. The item(s) held in the membrane area must be smaller than the membrane area, depending on the thickness of the item(s) held.