Instalační manuál 2N Access Unit ... 2. Description and Installation 2.2 Mechanical Installation 2.2.3 Module dimensions Frames9155011 – Flush mounting frame, 1 module9155012 – Flush mounting frame, 2 modules9155021 – Surface mounting frame, 1 module9155022 – Surface mounting frame, 2 modulesBackplates9155061 – 1 module9155062 – 2 modules