Master Keying and Construction Key Combo

For residential building projects that need both a construction key, to be used by contractors to gain entry to the various locked units during construction, and a master key to be provided to the building manager/supervisor or other service provider, this 995639 combination service provides both. Add this service to your order to get both a master key and a construction key. Both keys will work on all locks in the order, and the construction key will no longer work once the master key (or the individual lockset owner's key) is used.