Features: According to DIN 18.250 class 3 For wooden or steel doors For single-leaf doors Optional for rebated or non-rebated doors Bathroom/WC for bathroom doors Deadbolt 1-turns Technical data Level follower 8mm 9mm Deadbolt follower 8mm 5mm Distance 78mm Backset 55mm 60mm Forend Type: Round head, Square head Thickness 3mm Width 20mm 22mm 23mm 24mm Forend finish Stainless steel: Satin stainless steel, Stainless steel polished