List of Mattress Warehouse Stores in Gaithersburg, MD Outlet Note Regular Brands Mattress Warehouse Maryland Gaithersburg Rating 4.6 based on 72 votes Official Website www.mattresswarehouse.com/ Products Mattresses NameAddressPhone Name/Address/Phone Mattress Warehouse outlet - Gaithersburg 178 Kentlands Blvd (301) 355-7240 Mattress Warehouse outlet - Gaithersburg 451 N Frederick Ave (301) 869-9727 Mattress Warehouse outlet - Gaithersburg 16115 Shady Grove Rd (301) 926-3340 People Also Viewed