Map for Brennan Harris Map for Brennan Harris Search | Advanced Search | New Members | Coupons and Discounts | All Categories To ensure the technician can contact you, please enter your email accurately and consider adding your phone number in the message body. Advertising & Media >> CSIA Certified >> Maryland Brennan Harris 11301 Industrial Rd.Manassas, VA 20109 | directions (703) 379-5006 | fax: (703) 385-1423 To ensure the technician can contact you, please enter your email address accurately and consider adding your phone number in the message body.