Plastazote

This closed cell, cross-linked polyethylene foam uses only nitrogen as a blowing agent, so there’s no chance of harmful off-gassing. Perfect for long term storage of artifacts. Use this foam to line drawers and shelves, or carve cavities to cradle objects.  Natural white. Available in 1/8”, ½” and 1” thick sheets, 39 x 39”. Package of 6 sheets.