Materials Cover plate in die-cast UNI EN 1706 AC - 46100 DF aluminium alloy. Bracket fastening screws made of AISI 304 stainless steel. Fixing brackets in die-cast UNI EN 1706 AC - 46100 DF with nontarnishing spring type turning system. Seal in flexible polyvinyl chloride (PVC). Characteristics For 45 x 186 hatches with semi-rounded ends. For installation in octagonal poles with a circumscribed diameter of at least 105 mm. Angle of adaptation to pole 135°. Used along with MVV - MGN - MGV (for pole diameters of more than 133 mm) series junction boxes with double insulation. Bracket fastening screws with special hemispherical triangular shaped heads and semi-rounded sides (trademark application pending), and tightened with the special supplied key. Protection degree IP 54 in compliance with CEI EN 60529, IK 10 according to CEI EN 62262.