Depends heavily on what kind of door, and where its to be installed for a regular no frills no complication install my rough guess would be around $300, but thats an off the cuff best guess estimate without knowing any of the details about whats being installed or where. You will have to speak to someone in the store and provide details of the job to get a more accurate estimate
Costs vary on the scope of work, they do in home estimates. Stop by the millwork desk and talk with one of the associates for more details.
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