Patent ID: 7277300

Claim:
An enclosure comprising a vent grid fitted in a wall of the enclosure, said vent grid comprising: parallel first electrically-conductive members extending in a first direction, said first electrically-conductive members having a constant cross-sectional area; parallel second electrically-conductive members extending in a second direction, intersecting with the first direction, so as to intersect with the first electrically-conductive members, said second electrically-conductive members having a constant cross-sectional area; and an electrically-conductive piece located at a corner of an opening surrounded by adjacent ones of the first electrically-conductive members and adjacent ones of the second electrically-conductive members, said electrically-conductive piece connecting first and second electrically-conductive members, intersecting with each other at the corner, to each other, wherein the electrically-conductive piece extends along the first and second electrically-conductive members from an apex of the corner.