Insulated closure structure

摘要: A closure structure for a walk-in freezer or refrigerator unit capable of being mounted into rectangular opening, the comprising U-shaped inner frame member and outer which are connected at mating lip flange to form C-shaped channel receive wall around threshold flush with floor hingedly door member. The has an insulating material correspond opening. Sealing may be enhanced by provision magnetic gasket metal strip. double wiper strip on bottom is positioned contain heated in threshold.