| MCMagbee Contractors Supply | Winder | GA | — | ◇ UNVERIFIED |
| MSMaggies Shutters INC | Sun Valley | CA | — | ◇ UNVERIFIED |
| MWMagnolia Windows & Doors | Cornelia | GA | — | ◇ UNVERIFIED |
| MLMaibec Lumber, INC | Masardis | ME | — | ◇ UNVERIFIED |
| MFMaiman Fine Architectural Doors | Springfield | MO | — | ◇ UNVERIFIED |
| MOMaine Oar and Paddle Company | Orono | ME | — | ◇ UNVERIFIED |
| MWMajestic Wood Products Ii LLC | White City | OR | — | ◇ UNVERIFIED |
| MWMajestic Woodworking INC | Coon Rapids | MN | — | ◇ UNVERIFIED |
| MSMakah Sawmill | Neah Bay | WA | — | ◇ UNVERIFIED |
| MLMalheur Lumber CO | John Day | OR | — | ◇ UNVERIFIED |
| MDManhattan Door Corporation | Carlstadt | NJ | — | ◇ UNVERIFIED |
| MMMannington Mills, INC. | San Jose | CA | — | ◇ UNVERIFIED |
| MHMaple Hardwoods INC Dba Maples Sawmill INC | Hessel | MI | — | ◇ UNVERIFIED |
| MRMaple Rapids Lumber Mill INC | Saint Johns | MI | — | ◇ UNVERIFIED |
| MSMaples Sawmill | Hessel | MI | — | ◇ UNVERIFIED |
| MCMaplewood Cabinetry | Glendale | AZ | — | ◇ UNVERIFIED |
| MSMarathon Staffing | Thornton | CA | — | ◇ UNVERIFIED |
| MTMarcum Transport, INC. | Verdunville | WV | — | ◇ UNVERIFIED |
| MWMarden Woods Investments, LLC | Colton | CA | — | ◇ UNVERIFIED |
| MSMarine Systems | Menlo Park | CA | — | ◇ UNVERIFIED |
| MCMark Chatham | Reagan | TN | — | ◇ UNVERIFIED |
| MTMark Twain Forest Products CO. | Centerville | MO | — | ◇ UNVERIFIED |
| MIMarlite INC | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| MTMarshall Towne Millwork LLC Dba Auburn Ridge | Marshall | WI | — | ◇ UNVERIFIED |
| MLMartin Lumber LLC | Bend | OR | — | ◇ UNVERIFIED |
| MLMarvin Lumber - Cedar CO Dba Marvin Windows - Door | Warroad | MN | — | ◇ UNVERIFIED |
| MRMarys River Lumber CO | Montesano | WA | — | ◇ UNVERIFIED |
| MRMarys River Lumber CO INC | Bow | WA | — | ◇ UNVERIFIED |
| MMasonite | Walkerton | IN | — | ◇ UNVERIFIED |
| MAMasonite Architectural INC. | Northumberland | PA | — | ◇ UNVERIFIED |
| MCMasonite CORP | Marshfield | WI | — | ◇ UNVERIFIED |
| MCMasonite Corporation | Denmark | SC | — | ◇ UNVERIFIED |
| MCMasonite Corporation | Haleyville | AL | — | ◇ UNVERIFIED |
| MCMasonite Corporation | Largo | FL | — | ◇ UNVERIFIED |
| MIMasonite International | Winchester | VA | — | ◇ UNVERIFIED |
| MIMasonite International CORP. | Tampa | FL | — | ◇ UNVERIFIED |
| MIMasonite International Corporation | Thorp | WI | — | ◇ UNVERIFIED |
| MIMasonite International INC | Stockton | CA | — | ◇ UNVERIFIED |
| MMMasonite - Madison Location | Tampa | FL | — | ◇ UNVERIFIED |
| MIMastercraft INC. | Fredericksburg | VA | — | ◇ UNVERIFIED |
| MSMasterpiece Staircase - Millwork, LLC | Wesley Chapel | NC | — | ◇ UNVERIFIED |
| MSMasterpiece Stair INC | Denver | CO | — | ◇ UNVERIFIED |
| MLMatelski Lumber Company | Boyne Falls | MI | — | ◇ UNVERIFIED |
| MWMatheny Windows & Doors | San Leandro | CA | — | ◇ UNVERIFIED |
| MFMaurer Flooring, Inc. | Damascus | OR | — | ◇ UNVERIFIED |
| MDMaverick Door and Millwork, INC. | Schertz | TX | — | ◇ UNVERIFIED |
| MTMaxcess Technologies | Summerville | SC | — | ◇ UNVERIFIED |
| MCM&b Carpentry and Manufacturing, INC. | Farmersville | CA | — | ◇ UNVERIFIED |
| MFMBH Furniture Innovations Inc. | Spring Valley | NY | — | ◇ UNVERIFIED |
| MSMcbride Sawmill LLC | Mountain View | MO | — | ◇ UNVERIFIED |
| MFMcclain Forest Products-alton | Alton | MO | — | ◇ UNVERIFIED |
| MPMccormick Piling & Lumber CO | Saint Helens | OR | — | ◇ UNVERIFIED |
| MLMcdowell Lumber Company, INC | Asheboro | NC | — | ◇ UNVERIFIED |
| MCMcfarland Cascade Pole & Lumber CO | Warren | OR | — | ◇ UNVERIFIED |
| MDMcfarland Door Manufacturing Company | Lakeview | OR | — | ◇ UNVERIFIED |
| MDMcfarland Door & Millwork LLC | Lakeview | OR | — | ◇ UNVERIFIED |
| MCMcgowan Cabinet CO | Forest Lake | MN | — | ◇ UNVERIFIED |
| MLMcgriff Lumber CO | Boring | OR | — | ◇ UNVERIFIED |
| MWMclachlan Wood Finishing CO | Mountain View | CA | — | ◇ UNVERIFIED |
| MLMcshan Lumber Company, INC. | Mc Shan | AL | — | ◇ UNVERIFIED |
| MHM.d. Harmon INC. | Xenia | IL | — | ◇ UNVERIFIED |
| MIMdlg, INC. Dba Phenix Lumber CO. & John M. Dudley | Phenix City | AL | — | ◇ UNVERIFIED |
| MWMeador Wood Products INC. | Flat Top | WV | — | ◇ UNVERIFIED |
| MRMeadow River Hardwood Lumber Company, LLC | Rainelle | WV | — | ◇ UNVERIFIED |
| MWMead Westvaco Corporation | Cottonton | AL | — | ◇ UNVERIFIED |
| MLMebane Lumber Company Incorporated | Mebane | NC | — | ◇ UNVERIFIED |
| MBMeeks Building Center | Stockton | CA | — | ◇ UNVERIFIED |
| MIMegan, INC. | Warsaw | IN | — | ◇ UNVERIFIED |
| MFMeisters Forest Products | Black River Falls | WI | — | ◇ UNVERIFIED |
| MAMelbourne Architectural Mill Work | Melbourne | FL | — | ◇ UNVERIFIED |
| MFMendocino Forest Products CO. Llc, Calpella Distribution Center | Calpella | CA | — | ◇ UNVERIFIED |
| MTMenominee Tribal Enterprises | Neopit | WI | — | ◇ UNVERIFIED |
| MHMenzner Hardwoods CO. | Marathon | WI | — | ◇ UNVERIFIED |
| MLMenzner Lumber and Supply Company | Walnut Grove | KY | — | ◇ UNVERIFIED |
| MSMerchandiser & Shipping Product | Leola | AR | — | ◇ UNVERIFIED |
| MWMerritt West LLC | Lodi | CA | — | ◇ UNVERIFIED |
| MIMesker Industries in | Hazelwood | MO | — | ◇ UNVERIFIED |
| MIMetrie INC | Rocklin | CA | — | ◇ UNVERIFIED |
| MIMetrie INC | Doswell | VA | — | ◇ UNVERIFIED |
| MIMetrie INC | Rocklin | CA | — | ◇ UNVERIFIED |
| MMMeyer Moulding & Millwork, INC | Modesto | CA | — | ◇ UNVERIFIED |
| MWMfp Willits | Willits | CA | — | ◇ UNVERIFIED |
| MGM G Building Materials | San Antonio | TX | — | ◇ UNVERIFIED |
| MLMicala Limited | Willoughby | OH | — | ◇ UNVERIFIED |
| MMMicawrap Moulding | Riverbank | CA | — | ◇ UNVERIFIED |
| MAMichael Allen White, Jr. | Mount Vernon | OR | — | ◇ UNVERIFIED |
| MEMichael Eramo Contracting | Hyde Park | NY | — | ◇ UNVERIFIED |
| MJMichael J Infanti | Lombard | IL | — | ◇ UNVERIFIED |
| MRMichael Reilly Design Incorporated / Dba Reilly Windows & Doors | Calverton | NY | — | ◇ UNVERIFIED |
| MSMichalangelo Stair Builders | North Easton | MA | — | ◇ UNVERIFIED |
| MAMid America Hardwoods-mid America Hardwoods | Sarcoxie | MO | — | ◇ UNVERIFIED |
| MAMid Atlantic Milling INC. | White Sulphur Springs | WV | — | ◇ UNVERIFIED |
| MWMidsouth Window Fashions LLC | Memphis | TN | — | ◇ UNVERIFIED |
| MBMidwest Building Components INC. | Springfield | MO | — | ◇ UNVERIFIED |
| MWMidwestern Wood Products | Morton | IL | — | ◇ UNVERIFIED |
| MHMidwest Hardwood Corporation | Westby | WI | — | ◇ UNVERIFIED |
| MHMidwest Hardwoods Corporation | Reedsburg | WI | — | ◇ UNVERIFIED |
| MPMidwest Prefinishing INC | Middleton | WI | — | ◇ UNVERIFIED |
| MTMidwest Tops INC | Milwaukee | WI | — | ◇ UNVERIFIED |
| MWMidwest Walnut Co-midwest Walnut CO | Willow Springs | MO | — | ◇ UNVERIFIED |
