If you need packing material for shipping insulators, make friends with your local funeral home...! The styrofoam packing for urns when they come new fits a M-3070 or smaller multipart perfectly ... (or larger glass or porcelain unipart ) it is very thick and rigid and the best stuff on earth for keeping your precious pieces safe in the mail! they usually just toss this stuff in the trash. instead it can be used over and over for shipping insulators and taking rare jewels to shows for display !