Era Double Locking Nightlatch 40mm Finish: Brass Effect Body Brass Cylinder Option:Finish: Brass Effect Body Brass Cylinder For use on timber doors For use on timber doors hinged on the left or right and requiring turn and emergency release functions Latch bolt withdrawn by knob or sprung lever handle from either side Reversible latch bolt Two way action for knobs or sprung lever handles Pierced to accept bolt through furniture Not suitable for unsprung lever handles one part polyurethane foam in a ready to use hand held canister Fire resistant for up to 2 hours in certain joint configurations It expands on application to up to 50 times the can contents and meets the requirements of the test criteria for BS 476 Part 20 The Double Locking Nightlatch is designed to replace most existing front door locks The main lock bolt is 'automatically' deadlocked when the door is closed 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an anti clockwise turn of the key from the inside so securing the lock against forced entry The bolt can be held in the withdrawn position (only) with the use of the snib feature This product is ideal for solid and glass panelled doors An ergonomic internal locking handle which offers added security against forced entry Interior & Exterior Material: Zinc Alloy Fixings included 10 year guarantee and warranty