Yale 84-DMG-40 Nightlatch 40mm Dark Metallic

The Yale 84-DMG-40 is a professional-grade nightlatch cylinder pack designed for bulk installations on communal and flat entrance doors. 

• 40mm cylinder size — fits standard nightlatch cases for universal compatibility across most domestic installations
• Dark metallic finish — durable coating resists corrosion and maintains professional appearance in high-traffic communal areas
• Less cylinders design — allows key-operated external access with internal turn-handle convenience for secure, user-friendly operation
• Anti-bump security — reinforced against forced entry techniques, providing peace of mind for residential and communal spaces
• 60mm backset — works seamlessly with standard rollerbolt nightlatch mechanisms for straightforward fitting
• Perfect for refurbishing communal entrance doors, upgrading building security systems, or stocking professional inventory

Free UK delivery on orders of £20 or more after any discount, £3.99 under that. Prices include VAT.

Order before 1pm Monday to Friday and we dispatch the same working day from our Barnsley warehouse. Later orders, weekends and bank holidays go out the next working day.

Usually delivered in 1 to 2 working days from dispatch on next-day services. Delivery dates are estimates.

UK only: England, Scotland, Wales and the surrounding isles. Full details in the delivery policy.

30 days from receipt to return most items, unused and in their original packaging (exclusions apply), plus your 14-day right to cancel under the Consumer Contracts Regulations 2013. We pay return postage when an item is faulty, wrong or not as described. Read the returns policy.