Apparatus for sealing an opening (O;A-F;3a-3h;4a-4d;5d-5j;206a-c) to a compartment defined by at least one edge including: a seal layer (10;30;102) sized and configured to cover said opening (O;A-F;3a-3h;4a-4d;5d-5j;206a-c), said seal layer (10;30;102) to effectively adhere to at least substantially all of the edge of said opening (O;A-F;3a-3h;4a-4d;5d-5j;206a-c), at least one additional layer (104;106) of material provided in a generally parallel and confronting relationship with the seal layer (10;30;102) over substantially most of the opening (O;A-F;3a-3h;4a-4d;5d-5j;206a-c), said additional layer (104;106) being positioned on top of said seal layer (10;30;102), characterized by said seal layer (10;30;102) having a plurality of tear lines (12;14;L;TL) defining a plurality of portions (5a-c;22;24;26) of the seal layer (10;30;102) to be positioned over the opening (O;A-F;3a-3h;4a-4d;5d-5j;206a-c) of the compartment, the tear lines (12;14;L;TL) positioned and formed for selective tearing to permit selective removal of at least two of the plurality of portions (5a-c;22;24;26) of the seal layer (10;30;102) from the opening (O;A-F;3a-3h;4a-4d;5d-5j;206a-c) by pulling on a gripping tab portion (T;102t;104t;106t;16;18;20;32;34;36) connected to at least one of the plurality of portions (5a-c;22;24;26) of the seal layer (10;30;102) to remove a related portion of the seal layer (10;30;102), and said additional material (104;106) being separable along a line in a location of the additional material (104;106) that does not have a tear line, said line at least generally corresponding to one of the plurality of tear lines (12;14;L;TL) of the seal layer (10;30;102) when said one of the plurality of tear lines (12;14;L;TL) is selectively torn. a seal layer (10;30;102) sized and configured to cover said opening (O;A-F;3a-3h;4a-4d;5d-5j;206a-c), said seal layer (10;30;102) to effectively adhere to at least substantially all of the edge of said opening (O;A-F;3a-3h;4a-4d;5d-5j;206a-c), at least one additional layer (104;106) of material provided in a generally parallel and confronting relationship with the seal layer (10;30;102) over substantially most of the opening (O;A-F;3a-3h;4a-4d;5d-5j;206a-c), said additional layer (104;106) being positioned on top of said seal layer (10;30;102), characterized by said seal layer (10;30;102) having a plurality of tear lines (12;14;L;TL) defining a plurality of portions (5a-c;22;24;26) of the seal layer (10;30;102) to be positioned over the opening (O;A-F;3a-3h;4a-4d;5d-5j;206a-c) of the compartment, the tear lines (12;14;L;TL) positioned and formed for selective tearing to permit selective removal of at least two of the plurality of portions (5a-c;22;24;26) of the seal layer (10;30;102) from the opening (O;A-F;3a-3h;4a-4d;5d-5j;206a-c) by pulling on a gripping tab portion (T;102t;104t;106t;16;18;20;32;34;36) connected to at least one of the plurality of portions (5a-c;22;24;26) of the seal layer (10;30;102) to remove a related portion of the seal layer (10;30;102), and said additional material (104;106) being separable along a line in a location of the additional material (104;106) that does not have a tear line, said line at least generally corresponding to one of the plurality of tear lines (12;14;L;TL) of the seal layer (10;30;102) when said one of the plurality of tear lines (12;14;L;TL) is selectively torn.