Ready-Bilt walk-in refrigerators from Master-Bilt are completely pre-assembled at the factory, delivered to the site and ready to use after the customer supplies electricity to the single-source hook up. The walk-ins offer 4-in. thick, foamed-in-place polyurethane panels with cam-locking mechanisms and adjustable hinge backing plates for a proper door fit. A vapor-proof light, heavy-duty door closure, dial thermometer, door drip guard and weatherproof light switch cover are included.