Polar King International, Inc. is the industry's #1 manufacturer of fiberglass outdoor walk-in coolers and freezers. Our walk-in refrigerators are made of fiberglass and designed specifically for outdoor use. All units are delivered pre-wired, pre-assembled, and ready to operate. No on-site assembly is required on any walk-in or trailer unit. Our 100% seamless fiberglass design provides a continuous surface which keeps the insulated structure completely intact; free of moisture damage and bacteria formation. Plus, all of the interior corners are rounded to further ensure a sanitary environment. Far superior to conventional metal walk-in units, Polar King outdoor walk-in coolers and freezers come standard with a 12-year structural warranty; including the floor and roof. Our refrigeration units are designed and engineered specifically for outdoor use. Every unit is built to maintain its efficiency as outdoor conditions change, offering worry-free operation.