Thermoplastic Back Insert (Economy)
[108]

Economy Thermoplastic Back Insert. Moldable posterior panel for pocket wraparounds. Heat conductive plastic on one side, padded two-ply insulating material on the other. Universally sized. Similar to Model 107, but without cotton duck covering and with only two-ply laminate for insulation. Complete with instructions.

Size: 13-5⁄8" x 7-3⁄8".