LOXBOX^TM is designed to help prevent intruders from introducing impurities into critical gas supply systems in Hospitals, Pharmaceutical Manufacturers, Clinics, Nursing Homes, Food Production and other areas affecting human and livestock health. Built of rugged 304 Stainless Steel, LOXBOX^TM serves as both a deterrent and tamper indicator. It is easily installed and compatible with virtually all oxygen and nitrogen connections. Locks are sold separately. Master 177 Shrouded Combination Locks (not shown) are available with LOXBOX^TM orders.