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