A high security mortice lock for use in interior and exterior doors in commercial and domestic environments. The lock has been rigorously tested to BS 3621:2007 which is a common requirement of building and content insurance policies. Approval BS 3621:2007 Backset mm 57.0 Bolt Throw mm 20 Corrosion Rating 2 - Occasionally damp/wet, rural and sheltered areas Description A high security mortice lock for use in interior and exterior doors in commercial and domestic environments. The lock has been rigorously tested to BS 3621:2007 which is a common requirement of building and content insurance policies. Faceplate Size H x W mm 125 x 25 Faceplate Type Square Finish Electro Brass Keep Size H x W mm 150 x 29 Key Qty 2 Lock Case Depth mm 78 Lock Case Height mm 80 Lock Case Size H x D mm 80 x 78 Lock Case Width mm 18 Lock Follower Backset mm 57.0 No. of CSK Screws 6 Product Code 675157 Rec Screw Dia. mm 4.0 Rec Screw Gauge imp. 8 Screw Size imp. 8 x 1 Screw Size mm 4.0 x 25 Screws Required Per Pair 6 Size mm 78 / 57