The KL-fastening plates are steel plates equipped with anchors, which are mounted to the concrete before the hardening of the concrete. The anchors transfer the stresses of the steel plate to the concrete structure. Connections to the fastening plates are made by welding straight to the steel plate.

KL fastening plates are part of Rakennusteollisuus RT’s “Unified fastening plates” project, the purpose of which is to facilitate the work of designers, manufacturers, precast concrete factories, construction contractors, and authorities thanks to their interchangeability.