| SIShutterz, INC. | Chandler | AZ | — | ◇ UNVERIFIED |
 Sierra Pacific Industries | Richfield | CA | — | ◇ UNVERIFIED |
| Sierra Pacific Industries (2042-rd) | Red Bluff | CA | — | ◇ UNVERIFIED |
| Sierra Pacific Industries Richfield Division | Corning | CA | — | ◇ UNVERIFIED |
| SPSierra Pacific Windows | Missoula | MT | — | ◇ UNVERIFIED |
| SPSierra Pacific Windows | Medford | WI | — | ◇ UNVERIFIED |
| SPSierra Pacific Windows | Medford | WI | — | ◇ UNVERIFIED |
| SPSierra Pacific Windows-61 | Phenix City | AL | — | ◇ UNVERIFIED |
| SWSierra Woods INC. | Nevada City | CA | — | ◇ UNVERIFIED |
| SWSimonton Windows | Pennsboro | WV | — | ◇ UNVERIFIED |
| SASlam A Door LLC | Salinas | CA | — | ◇ UNVERIFIED |
| SRSmith & Riddel Customs, LLC | Fort Worth | TX | — | ◇ UNVERIFIED |
| SWSnead Wholesale, LLC | Altoona | AL | — | ◇ UNVERIFIED |
| SPSne-stevens Point | Stevens Point | WI | — | ◇ UNVERIFIED |
| SPSonoma Pacific Company | Sonoma | CA | — | ◇ UNVERIFIED |
| SSSoutheastern Sash & Door, INC. | Fort Walton Beach | FL | — | ◇ UNVERIFIED |
| SSSoutheast Specialty Millwork | Marietta | GA | — | ◇ UNVERIFIED |
| SCSouthern Custom Doors, INC. | Columbia | SC | — | ◇ UNVERIFIED |
| SFSouthern Finishing | Martinsville | VA | — | ◇ UNVERIFIED |
| SFSouthern Finishing Company | Martinsville | VA | — | ◇ UNVERIFIED |
| SPSouthern Pacific Supply Co., INC. | Jessup | MD | — | ◇ UNVERIFIED |
| SWSouthern Wood Products LLC | Naples | FL | — | ◇ UNVERIFIED |
| SWSouthland Windows & Doors | Santa Ana | CA | — | ◇ UNVERIFIED |
| SWSpecialty Woodworks Company | Hamilton | MT | — | ◇ UNVERIFIED |
| SISpectal Industries USA INC | Gaffney | SC | — | ◇ UNVERIFIED |
| SCSpray Craft Finishing | Redwood City | CA | — | ◇ UNVERIFIED |
| SRStandard Register Middlebury Plant | Middlebury | VT | — | ◇ UNVERIFIED |
| SAStapley Action Garage Door, L.l.c. | Mesa | AZ | — | ◇ UNVERIFIED |
| SMStar Moulding & Trim CO | Bedford Park | IL | — | ◇ UNVERIFIED |
| SMStephenson Millwork Co., INC. | Wilson | NC | — | ◇ UNVERIFIED |
| SMStevenson Millwork INC. | Stevenson | CT | — | ◇ UNVERIFIED |
| SASteves and Sons Door Company | San Antonio | TX | — | ◇ UNVERIFIED |
| SCSteves Centennial, LLC | San Antonio | TX | — | ◇ UNVERIFIED |
| SSSteves & Sons INC | Lebanon | TN | — | ◇ UNVERIFIED |
| SSSteves & Sons, INC. | Athens | GA | — | ◇ UNVERIFIED |
| SAStoney Acres Woodworking, LLC | Burton | OH | — | ◇ UNVERIFIED |
| SSStormwise South Florida, INC | Opa Locka | FL | — | ◇ UNVERIFIED |
| SDStrek-o Doors, LLC | Abbotsford | WI | — | ◇ UNVERIFIED |
| SSSuber Steel Corporation | Stratford | CT | — | ◇ UNVERIFIED |
| SDSuburban Door Company | Tualatin | OR | — | ◇ UNVERIFIED |
| SWSummit Window Products INC | San Jose | CA | — | ◇ UNVERIFIED |
| SWSummit Woodworking | Oregon City | OR | — | ◇ UNVERIFIED |
| SSundorco | Newton | KS | — | ◇ UNVERIFIED |
| SWSunland Wood Products INC | North Hollywood | CA | — | ◇ UNVERIFIED |
| SMSun Mountain INC | Berthoud | CO | — | ◇ UNVERIFIED |
| SMSun Mountain, INC. | Johnstown | CO | — | ◇ UNVERIFIED |
| SPSunnyside Place LLC | Tacoma | WA | — | ◇ UNVERIFIED |
| SWSunrise Wood Prod INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| SBSunroc Building Materials, INC | Provo | UT | — | ◇ UNVERIFIED |
| SMSunset Moulding CO | Live Oak | CA | — | ◇ UNVERIFIED |
