Store Location and Hours Marshall's Industrial Hardware is open to the public. Visit our well stocked warehouse at 8423 Production Avenue, San Diego, CA 92121. We are located in the Miramar / Mira Mesa area just minutes from Carlsbad, Sorrento Valley, La Jolla, Scripps Ranch, Poway, and all of San Diego. We are open from 7:00am to 5:30pm Monday thru Friday, and 8:00am to 12:00 noon on Saturday. (858) 271-5555.