| MMMagic Messenger INC | Buena Park | CA | — | ◇ UNVERIFIED |
| MWMalibu Window and Door | South El Monte | CA | — | ◇ UNVERIFIED |
| MWManko Window Systems, INC. | Manhattan | KS | — | ◇ UNVERIFIED |
| MMMantua Manufacturing CO. | Tampa | FL | — | ◇ UNVERIFIED |
| MUMaricorp US | Demopolis | AL | — | ◇ UNVERIFIED |
| MUMaricorp U.s., LLC | North Little Rock | AR | — | ◇ UNVERIFIED |
| MUMaricorp U.s., LLC | Little Rock | AR | — | ◇ UNVERIFIED |
| MUMaricorp Us, LLC | Shell Knob | MO | — | ◇ UNVERIFIED |
| MDMarine Development, INC. | Eufaula | OK | — | ◇ UNVERIFIED |
| MCMARSfarm Corporation | Overland | MO | — | ◇ UNVERIFIED |
| MEMarshall Erdman & Assoc | Waunakee | WI | — | ◇ UNVERIFIED |
| MBMartin Bros | Vallejo | CA | — | ◇ UNVERIFIED |
| MAMartins Appliance Warehouse | West Earl, Township of | PA | — | ◇ UNVERIFIED |
| MHMascotte Home Security Products INC | Portland | OR | — | ◇ UNVERIFIED |
| MCMason Corporation | Birmingham | AL | — | ◇ UNVERIFIED |
| MDMasonite Door Corporation | Richmond | IN | — | ◇ UNVERIFIED |
| MSMassey Steel Structures, LLC | Atlanta | GA | — | ◇ UNVERIFIED |
| MSMastercare Shutter Corporation | Hobe Sound | FL | — | ◇ UNVERIFIED |
| MPMastercore Products | San Marcos | CA | — | ◇ UNVERIFIED |
| MWMaster Window Systems, INC. | Atlanta | GA | — | ◇ UNVERIFIED |
| MCMasterwork Components Inc | Kalispell | MT | — | ◇ UNVERIFIED |
| MHMastic Home Exteriors, INC. | Sidney | OH | — | ◇ UNVERIFIED |
| MDMaverick Development, INC. | Cotter | AR | — | ◇ UNVERIFIED |
| MAM & a Windows, INC. | Lake Worth | FL | — | ◇ UNVERIFIED |
| MMbci | Converse | TX | — | ◇ UNVERIFIED |
| MWMccandless Waimalu Properties LLC | Honolulu | HI | — | ◇ UNVERIFIED |
| MMMcelroy Metal Mill, INC. | Clinton | IL | — | ◇ UNVERIFIED |
| MMMcelroy Metal Mill, INC. | Alexandria | LA | — | ◇ UNVERIFIED |
| MMMcelroy Metal Mill INC Dba Mcelroy Metal | Adelanto | CA | — | ◇ UNVERIFIED |
| MDMckendry Door Sales INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| MSMCM Skylights LLC | Garland | TX | — | ◇ UNVERIFIED |
| MIMcwi INC. | Jamaica | NY | — | ◇ UNVERIFIED |
| MPMdm Products, LLC | Milford | CT | — | ◇ UNVERIFIED |
| MUMdm Utah, LLC | South Salt Lake | UT | — | ◇ UNVERIFIED |
| MMMeddco Metals | Hayward | CA | — | ◇ UNVERIFIED |
| MCMedea Corporation | Ormond Beach | FL | — | ◇ UNVERIFIED |
| MMMeehleis Modular Buildings INC | Lodi | CA | — | ◇ UNVERIFIED |
| MAMerrillville Awnings LLC | Merrillville | IN | — | ◇ UNVERIFIED |
| MMMesco Metal Buildings | Southlake | TX | — | ◇ UNVERIFIED |
| MBMetal Building Masters, LLC | Mount Airy | NC | — | ◇ UNVERIFIED |
| MBMetal Building Products, Inc., Dba Spirco Manufacturing | Memphis | TN | — | ◇ UNVERIFIED |
| MBMetal Building Services | Ardmore | OK | — | ◇ UNVERIFIED |
| MBMetal Building Services, LLC | Semmes | AL | — | ◇ UNVERIFIED |
| MDMetal Design Systems, Inc. | Anamosa | IA | — | ◇ UNVERIFIED |
| MFMetal Framing Industries LLC | Cleveland | OH | — | ◇ UNVERIFIED |
| MFMetal Framing Industries LLC | Valley View | OH | — | ◇ UNVERIFIED |
| MGMetal & Glass Solutions CORP. | Brooklyn | NY | — | ◇ UNVERIFIED |
| MIMetal Impressions, Inc. | Pittsboro | NC | — | ◇ UNVERIFIED |
 Metal Industries, INC. | Clearwater | FL | — | ◇ UNVERIFIED |
| MFMetalline Fire Door Co., INC. | Bronx | NY | — | ◇ UNVERIFIED |
| MMMetal Mart | La Grange | TX | — | ◇ UNVERIFIED |
| MPMetal Pro Group Inc | Dover | NJ | — | ◇ UNVERIFIED |
| MPMetal Pro Industries INC | Valencia | CA | — | ◇ UNVERIFIED |
| MRMetal Roofing Center & Supply | Punta Gorda | FL | — | ◇ UNVERIFIED |
| MDMetals Direct INC | Redding | CA | — | ◇ UNVERIFIED |
| MSMetal Spray Painting, INC. | Coral Springs | FL | — | ◇ UNVERIFIED |
| MIMetfab, INC. | Houston | TX | — | ◇ UNVERIFIED |
| MAMetl-span a Division of Nci Group INC | Mattoon | IL | — | ◇ UNVERIFIED |
| MAMetl-span a Div of Nci Group INC | Jackson | MS | — | ◇ UNVERIFIED |
| MSMetro Screenworks, INC. | Englewood | CO | — | ◇ UNVERIFIED |
| MIMgm Industries Incorporated | Hendersonville | TN | — | ◇ UNVERIFIED |
| MWMgm Window CO INC | Hendersonville | TN | — | ◇ UNVERIFIED |
| MRMG Repair Services, Inc | Opa Locka | FL | — | ◇ UNVERIFIED |
| MWMiami Wall Systems, INC. | Hialeah | FL | — | ◇ UNVERIFIED |
| MDMichael D. Schoeneman | Rancho Cordova | CA | — | ◇ UNVERIFIED |
| MCMid Central Door Company INC | Waite Park | MN | — | ◇ UNVERIFIED |
| MGMidland Garage Door Manufacturing Company | West Fargo | ND | — | ◇ UNVERIFIED |
| MGMidland Garage Door Manufacturing Company | Chaska | MN | — | ◇ UNVERIFIED |
| MCMidwest Curtainwalls | Cuyahoga Heights | OH | — | ◇ UNVERIFIED |
| MFMidwest Fabrication & Welding, LLC | Tipton | IA | — | ◇ UNVERIFIED |
| MMMidwest Manufacturing | Holiday City | OH | — | ◇ UNVERIFIED |
| MMMidwest Manufacturing | Sullivan | MO | — | ◇ UNVERIFIED |
| MWMidwest Window and Door | Springfield | MO | — | ◇ UNVERIFIED |
| MBMilco Building Products, INC. | Swainsboro | GA | — | ◇ UNVERIFIED |
| MMMilgard Manufacturing INC | Temecula | CA | — | ◇ UNVERIFIED |
| MMMilgard Mfg INC | Tacoma | WA | — | ◇ UNVERIFIED |
| MDMillennium Doors and Windows Inc | Isabela | PR | — | ◇ UNVERIFIED |
| MDMillennium Doors and Windows Inc. | Isabela | PR | — | ◇ UNVERIFIED |
| MMMilliken Millwork INC | Sterling Heights | MI | — | ◇ UNVERIFIED |
| MMMiramar Mfg, INC. | Ventura | CA | — | ◇ UNVERIFIED |
| MMMisa Metal Fabricating INC | Pleasure Ridge Park | KY | — | ◇ UNVERIFIED |
| MIMish-Ra, Inc. | Santa Clara | CA | — | ◇ UNVERIFIED |
| MWMi Windows and Doors | Carrollton | TX | — | ◇ UNVERIFIED |
| MWMi Windows & Doors LLC | Brazil | IN | — | ◇ UNVERIFIED |
| MSM&K Screens LLC | North Las Vegas | NV | — | ◇ UNVERIFIED |
| MMMnm Manufacturing | Compton | CA | — | ◇ UNVERIFIED |
| MMMobile Mini, INC | Carson | CA | — | ◇ UNVERIFIED |
| MMMobile Mini - Maricopa Manufacturing Facility | Maricopa | AZ | — | ◇ UNVERIFIED |
| MMMobile Mini Storage Systems | Rialto | CA | — | ◇ UNVERIFIED |
| MDModern Door Corportation | Walkerton | IN | — | ◇ UNVERIFIED |
| MIMods International | Appleton | WI | — | ◇ UNVERIFIED |
| MFModular Fabrication Incorporated | Dayton | OH | — | ◇ UNVERIFIED |
| MMModular Mini Storage INC | Tualatin | OR | — | ◇ UNVERIFIED |
| MWMonda Window & Door, CORP. | Chicago | IL | — | ◇ UNVERIFIED |
| MHMonessen Hearth Systems | Paris | KY | — | ◇ UNVERIFIED |
| MIMonitor INC | Sherman | TX | — | ◇ UNVERIFIED |
| MWMontgomery Window Products Co. | Frederick | MD | — | ◇ UNVERIFIED |
 Morton Buildings | Cooperstown | NY | — | ◇ UNVERIFIED |
| Morton Buildings INC. | Morton | IL | — | ◇ UNVERIFIED |
| MSMoss Supply Company | Charlotte | NC | — | ◇ UNVERIFIED |
