Wörterbuch (en): Gripping fold
de: 
Ladenfalz (m)
fr: 
Pli de la fenêtre (m) 
it: 
Piegatura della finestra (f) 
es: 
Plegado de la ventana (m)
A right-angled cut-out, which ensures that a board, door, shutter or window is gripped and tightly connected. The more folds that are used, the tighter this connection will be.

