When I started my job, I inherited a 20-30 year old glove box. My intention was to use it for synthesis of titanium complexes but it had no freezer, no cold-well, and no small antechamber. After rebuilding it, making it air-tight, I constructed a styrofoam box and plumbed copper tubing through the back of the box from a cold water chiller. The "freezer" would hold 4 °C on a good day. After 2 years of use, I convinced my chair to buy me a half of a glove box, and I paid for the rest with the remainder of my startup funds. Our first crystal structure was obtained within 2 months later.
Throw it out.