edges of the mounting hole for clip / magnet serve as an additional heat dispassion. Used in cases where it is impossible to secure a profile on the double sided tape: on the wallpaper, paint, plaster, wood, and other dust, uneven, wet and corrode the bases.
Wall mounting with clips LC or magnets PM
Angle mounting with clip LC 1 and angle KT10.
Standard caps (endings) without hole ZP12 and with hole ZPO12, clip LK, magnet PM.