Era BS High Security Nightlatch 40mm Finish: Polished Chrome Body Chrome Cylinder Option:Finish: Polished Chrome Body Chrome Cylinder protects all exterior joinery Provides tough protects all exterior joinery Provides tough weather protection and excellent durability Resists blistering and flaking Long lasting colour Use with Sadolin Classic for optimum performance cracking or shrinking Features a 20mm bolt throw Interior & Exterior Material: Zinc Alloy Fixings included 10 year guarantee and warranty preventing the main bolt being retracted by a credit card The inside handle can be deadlocked by an anti clockwise turn of the key from the inside so securing the lock against forced entry The bolt can be held in the withdrawn position (only) with the use of the snib feature This product is ideal for solid and glass paneled doors An ergonomic internal locking handle which offers added security against forced entry