Masterbilt Walk-in cooler and freezer door gaskets keep the cool air in and warm air out. Save money and energy by keeping your Masterbilt walk-in cooler door seals tight. Masterbilt Walk-in freezer door gaskets that are warn, broken or even missing need to be replaced. Can't find what you need? We can custom manufacture your cooler door gasket to your specific needs. E-mail us at firstname.lastname@example.org or give us a call at 844.292.6694.