Online Catalogue > Nightlatches > Deadlocking Narrow Deadlocking Nightlatch - Grey Standard - Case Only Reference: NLB201 Bolt can be locked from inside with snib; Bolt and knob can be deadlocked from the outside by full turn of key; Zinc diecast body; Solid brass 5 pin cylinders; Pin tumbler mechanism; For doors 35-60mm thick; Left & right hand opening doors; 10 year guarantee. PACKED 6s Click here for full product specs (pdf file) Deadlocking Nightlatch - Grey Narrow - Case Only Reference: NLC201 Bolt can be locked from inside with snib; Bolt and knob can be deadlocked from the outside by full turn of key; Zinc diecast body; Solid brass 5 pin cylinders; Pin tumbler mechanism; For doors 35-60mm thick; Left & right hand opening doors; 10 year guarantee. PACKED 6s Click here for full product specs (pdf file) Deadlocking Nightlatch - White Narrow - Case Only Reference: NLG201 Bolt can be locked from inside with snib; Bolt and knob can be deadlocked from the outside by full turn of key; Zinc diecast body; Solid brass 5 pin cylinders; Pin tumbler mechanism; For doors 35-60mm thick; Left & right hand opening doors; 10 year guarantee. PACKED 6s Click here for full product specs (pdf file) Deadlocking Nightlatch - White Standard - Case Only Reference: NLW201 Bolt can be locked from inside with snib; Bolt and knob can be deadlocked from the outside by full turn of key; Zinc diecast body; Solid brass 5 pin cylinders; Pin tumbler mechanism; For doors 35-60mm thick; Left & right hand opening doors; 10 year guarantee. PACKED 6s Click here for full product specs (pdf file) Deadlocking Nightlatch - Grey Narrow - Case Only Reference: NLGC201 Case only; Zinc diecast body; For doors 35-60mm thick; Left & right hand opening doors; 10 year guarantee. PACKED 6s Click here for full product specs (pdf file) Deadlocking Nightlatch - White Narrow - Case Only Reference: NLWC201 Case only; Zinc diecast body; For doors 35-60mm thick; Left & right hand opening doors; 10 year guarantee. PACKED 6s Click here for full product specs (pdf file)