Glazing unit comprising - a glass panel which is low in reflectance, with an attenuation level of 10 decibels, dB, or less, for RF radiation, - a coating system which is high in reflectance,with an attenuation level of 20 decibels, dB, or more, for RF radiation, disposed on the said glass panel - at least one frequency selective decoated portion of the coating system extending along a plane, P, defined by a longitudinal axis, X, and a vertical axis, Z; having a width, DW, measured along the longitudinal axis, X, and a length, DL, measured along the vertical axis, Z, comprising a first decoated element comprising a plurality of unit cells forming a regular grid and a plurality of second decoated elements wherein a second decoated element is placed in each unit cell of the first decoated element and wherein no second decoated element is in contact with the first decoated element wherein the second decoated elements comprise at least: - a first segment AB wherein the point B is a free termination, - a second segment CD wherein the point D is a free termination, - an intersection point E between the first segment AB and the second segment CD forming sub-segments AE, EB, CE and ED wherein: - the length, EB, of the sub-segment EB is less than the length, AE, of the sub-segment AE and higher than 0 (0 < EB < AE), - the length, ED, of the sub-segment ED is less than the length, CE, of the sub-segment CE and higher than 0 (0 < ED < CE) and wherein the second decoated element further comprises: - more than or equal to one additional segment and - intersections points between segments wherein each segment has one intersection point with another segment and wherein each segment has at most two intersection points and each segment has two intersection points with two different other segments to form a closed shape. - a glass panel which is low in reflectance, with an attenuation level of 10 decibels, dB, or less, for RF radiation, - a coating system which is high in reflectance,with an attenuation level of 20 decibels, dB, or more, for RF radiation, disposed on the said glass panel - at least one frequency selective decoated portion of the coating system extending along a plane, P, defined by a longitudinal axis, X, and a vertical axis, Z; having a width, DW, measured along the longitudinal axis, X, and a length, DL, measured along the vertical axis, Z, comprising a first decoated element comprising a plurality of unit cells forming a regular grid and a plurality of second decoated elements wherein a second decoated element is placed in each unit cell of the first decoated element and wherein no second decoated element is in contact with the first decoated element wherein the second decoated elements comprise at least: - a first segment AB wherein the point B is a free termination, - a second segment CD wherein the point D is a free termination, - an intersection point E between the first segment AB and the second segment CD forming sub-segments AE, EB, CE and ED wherein: - the length, EB, of the sub-segment EB is less than the length, AE, of the sub-segment AE and higher than 0 (0 < EB < AE), - the length, ED, of the sub-segment ED is less than the length, CE, of the sub-segment CE and higher than 0 (0 < ED < CE) and wherein the second decoated element further comprises: - more than or equal to one additional segment and - intersections points between segments wherein each segment has one intersection point with another segment and wherein each segment has at most two intersection points and each segment has two intersection points with two different other segments to form a closed shape. - a first segment AB wherein the point B is a free termination, - a second segment CD wherein the point D is a free termination, - an intersection point E between the first segment AB and the second segment CD forming sub-segments AE, EB, CE and ED wherein: - the length, EB, of the sub-segment EB is less than the length, AE, of the sub-segment AE and higher than 0 (0 < EB < AE), - the length, ED, of the sub-segment ED is less than the length, CE, of the sub-segment CE and higher than 0 (0 < ED < CE) and wherein the second decoated element further comprises: - more than or equal to one additional segment and - intersections points between segments wherein each segment has one intersection point with another segment and wherein each segment has at most two intersection points and each segment has two intersection points with two different other segments to form a closed shape. - the length, EB, of the sub-segment EB is less than the length, AE, of the sub-segment AE and higher than 0 (0 < EB < AE), - the length, ED, of the sub-segment ED is less than the length, CE, of the sub-segment CE and higher than 0 (0 < ED < CE) and wherein the second decoated element further comprises: - more than or equal to one additional segment and - intersections points between segments wherein each segment has one intersection point with another segment and wherein each segment has at most two intersection points and each segment has two intersection points with two different other segments to form a closed shape. - more than or equal to one additional segment and - intersections points between segments