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The Concept ||| A master key system is one cylinder design where multiple keys can open it, but only certain keys open certain doors. The master opens everything. Sub-master keys open groups of doors. Individual keys open one door each. Common in restaurants, offices, hotels, retail, schools. ||| When You Need One ||| If you have more than 5 doors and more than 3 staff with different access levels. Examples: a restaurant with manager, line cooks, dishwashers (3 levels). An office with executives, employees, cleaning staff (3 levels). ||| How We Design It ||| We sit down and map out who needs to access what. We draw the schematic showing the master, sub-masters, and individual keys. Then we cut the keys and pin the cylinders. ||| Cost ||| Small system (10-20 doors): $400-$800. Medium (20-50 doors): $800-$1,500. Large (50+ doors): $1,500-$3,000+. ||| Maintenance ||| When you lose a master, the whole system has to be rekeyed. We help set up a strict key control policy from day one.

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