| 主权项 |
1. An airtight enclosure comprising a pair of enclosure shells, each enclosure shell having:
a pair of first edges, each first edge having a first length and extending in a first direction and a pair of second edges, each second edge having a second length shorter than the first length and extending in a second direction transverse to the first direction, wherein the pair of first edges are spaced apart by a distance corresponding to the second length, the pair of second edges are spaced part by a distance corresponding to the first length, and wherein the pairs of first edges have complementary assemblages comprising a tongue and a groove, respectively, with mating geometries for assembling first edges of respective ones of the enclosure shells in sealing contact, and at least one second edge of the pair of second edges has a groove accommodating a resilient sealing member in sealing contact with a second edge of the other one of the pair of enclosure shells so that mating edges of each pair of second edge portions allow being assembled in multiple distinct positions within a range of relative positions transverse to the first direction with the resilient sealing member in sealing contact with the mating edges, wherein the complementary assemblages of the pairs of first edges are different than the mating edges of each pair of second edge portions. |
