So-Low DHH-30RFX Explosion Proof Refrigerator / Freezer offer a diverse range of options to fit your needs for Explosion Proof products. Ranging from 11 cubic feet to 30 cubic feet, these units are ideal for products of any size. Two inch solid urethane foam insulated doors, sturdy cam-lift hinges, and "lock-open" feature for "hands-free" access provide a secure and sturdy environment.