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
Mounting with mounting kits KT 1 and KT 25.
Standard caps (endings) without hole ZP17 and with hole ZPO17, clip LK, magnet PM.