Patent ID: 8413393

Claim:
An insulating cover assembly comprising: a continuous frame having spaced side walls and spaced end walls, said frame defining a frame opening therethrough; a removable closure member, said removable closure member including: a depending central portion, said depending central portion being sized and shaped to fit within said frame opening and engage each of said side walls and said end walls of said frame inside said frame opening to create a first continuous seal with said frame when said removable closure member is positioned on said frame in a covering relationship with respect to said frame opening; and an upper portion forming flanges, said flanges extending laterally outward relative to said depending central portion, said flanges being sized and shaped to engage an uppermost surface of each of said side walls and end walls to create a second continuous seal with said frame when said removable closure member is positioned on said frame in covering relationship with respect to said opening defined by said frame; wherein said closure member is completely detached from said frame when said first continuous seal and said second continuous seal are broken.