| RSR & S Manufacturing INC | Portland | OR | — | ◇ UNVERIFIED |
| RSR & S Manufacturing INC | Union City | CA | — | ◇ UNVERIFIED |
| RSRtec Systems INC. | Burlington | NJ | — | ◇ UNVERIFIED |
| RCRuskin Company | Lexington | KY | — | ◇ UNVERIFIED |
| RRytec | Hartford | WI | — | ◇ UNVERIFIED |
| RCRytec CORP | Jackson | WI | — | ◇ UNVERIFIED |
| S2Sac 2008 Enterprises LLC | Centerville | UT | — | ◇ UNVERIFIED |
 Safety Storage | Hollister | CA | — | ◇ UNVERIFIED |
| SZSafe Zone LLC | Naples | FL | — | ◇ UNVERIFIED |
| SISaleen INC | Troy | MI | — | ◇ UNVERIFIED |
| SMSantel Metal Finishings & Supply | Carencro | LA | — | ◇ UNVERIFIED |
| STSanz Tropical Mfg CO INC | Cabo Rojo | PR | — | ◇ UNVERIFIED |
 Sawyer Manufacturing Company* | Knoxville | TN | — | ◇ UNVERIFIED |
| SBSbc Building Systems, LLC | Ambridge | PA | — | ◇ UNVERIFIED |
| SBSbc Building Systems, LLC. | Ambridge | PA | — | ◇ UNVERIFIED |
| SMSbs-hollow Metal Specialist | Sarasota | FL | — | ◇ UNVERIFIED |
| SBScatton Bros Mfg Co/north Wales | North Wales | PA | — | ◇ UNVERIFIED |
| SRScenic Ridge Company | Manheim | PA | — | ◇ UNVERIFIED |
| SCSchlage Company, LLC | Cincinnati | OH | — | ◇ UNVERIFIED |
| SLSchlage Lock Company LLC | Chino | CA | — | ◇ UNVERIFIED |
| SLSchlage Lock Company LLC Dba Krieger Specialty Products | Pico Rivera | CA | — | ◇ UNVERIFIED |
| SLSchlage Lock Company, LLC Dba Republic Doors and Frames | Henry | TN | — | ◇ UNVERIFIED |
| SBSchulte Building Addition | Hueytown | AL | — | ◇ UNVERIFIED |
| SLScreenfab, L.l.c. | Phoenix | AZ | — | ◇ UNVERIFIED |
| SOScreens of Kentucky | Louisville | KY | — | ◇ UNVERIFIED |
| SCSeal-rite CORP. | Rockford | IL | — | ◇ UNVERIFIED |
| SHSears Holding | Livonia | MI | — | ◇ UNVERIFIED |
| SDSecure Door, LLC | Mount Clemens | MI | — | ◇ UNVERIFIED |
| SHSecurity Holdings, LLC | Carlstadt | NJ | — | ◇ UNVERIFIED |
| SWSelect Windows & Doors | Denver | CO | — | ◇ UNVERIFIED |
| SCSemling-menke Co., INC. | Merrill | WI | — | ◇ UNVERIFIED |
| SHSenneca Holdings | Mankato | MN | — | ◇ UNVERIFIED |
| SHSenneca Holdings (hmf Express) | Portland | OR | — | ◇ UNVERIFIED |
| SHSenneca Holdings (hmf Express) | Grove City | OH | — | ◇ UNVERIFIED |
| SHSenneca Holdings (hmf Express) | Saint Paul | MN | — | ◇ UNVERIFIED |
| SBSentinel Building Systems | Albion | NE | — | ◇ UNVERIFIED |
| SBSerratos Burglar Bars | San Antonio | TX | — | ◇ UNVERIFIED |
| SSShamrock Steel Sales, INC. | Odessa | TX | — | ◇ UNVERIFIED |
| SMSharp Machining & Polishing, Inc. | Kenosha | WI | — | ◇ UNVERIFIED |
| SDShed Depot & Shed Guy Services INC. | Ocala | FL | — | ◇ UNVERIFIED |
| SSShelter Solutions LLC | Albuquerque | NM | — | ◇ UNVERIFIED |
| SSShield Security Doors, LTD. | Brooklyn | NY | — | ◇ UNVERIFIED |
| SWSierra Woods INC | Grass Valley | CA | — | ◇ UNVERIFIED |
| SWSimonton Windows | Ellenboro | WV | — | ◇ UNVERIFIED |
| SWSimonton Windows | Pennsboro | WV | — | ◇ UNVERIFIED |
| SWSimonton Windows | Pennsboro | WV | — | ◇ UNVERIFIED |
| SKSinger Kearfott | Mount Vernon | NY | — | ◇ UNVERIFIED |
| SSSinger Safety Company | Chicago | IL | — | ◇ UNVERIFIED |
| SSSiw Solutions LLC | West Palm Beach | FL | — | ◇ UNVERIFIED |
 Skyline Steel, INC. | Chandler | AZ | — | ◇ UNVERIFIED |
 Sky Rider Equipment CO INC | Anaheim | CA | — | ◇ UNVERIFIED |
| Sky Rider Equipment CO INC | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| SSSmart Shelters, INC. | Oklahoma City | OK | — | ◇ UNVERIFIED |
| SISme Industries, INC. | Chubbuck | ID | — | ◇ UNVERIFIED |
| SASmi Aluminum Systems, LLC | Miramar | FL | — | ◇ UNVERIFIED |
| SSSmith System Manfacturing CO | Princeton | MN | — | ◇ UNVERIFIED |
| STSms Technical Services LLC Taylor Division | Taylor | MI | — | ◇ UNVERIFIED |
| SMSola Model/z Facility 1 LLC | Los Angeles | CA | — | ◇ UNVERIFIED |
| SISol-area, INC. | Newnan | GA | — | ◇ UNVERIFIED |
| SMSolarlux-nana Mfg LLC | Richmond | CA | — | ◇ UNVERIFIED |
| SWSol Windows and Doors S Corp, Inc. | Bossier City | LA | — | ◇ UNVERIFIED |
| SCSoutheastern Canopies, INC | Locust Grove | GA | — | ◇ UNVERIFIED |
| SOSoutheastern Outdoor Products, Incorporated | Clinton | NC | — | ◇ UNVERIFIED |
| SCSouthern Crafted, LLC | Fountain Inn | SC | — | ◇ UNVERIFIED |
| SMSouthern Machinery CORP | Lakeland | FL | — | ◇ UNVERIFIED |
| SWSouthern Walls & Windows | New Orleans | LA | — | ◇ UNVERIFIED |
| SMSouthland Manufacturing INC | Douglasville | GA | — | ◇ UNVERIFIED |
| SSSouth Sound Screen & Mobile Home Supply | Roy | WA | — | ◇ UNVERIFIED |
| SASouthwest Aluminum Systems INC | Chandler | AZ | — | ◇ UNVERIFIED |
 Southwest Mobile Storage INC | San Diego | CA | — | ◇ UNVERIFIED |
| SBSpecialty Building Products, INC. | Bossier City | LA | — | ◇ UNVERIFIED |
| SFSpecialty Frabricators and Erectors, INC. | Hammond | LA | — | ◇ UNVERIFIED |
| SSSpecialty Shutter Systems LLC | Victoria | TX | — | ◇ UNVERIFIED |
| SSSpecified Systems, INC. | Washington | PA | — | ◇ UNVERIFIED |
| SWSpeedy Windows Corporation | Brooklyn | NY | — | ◇ UNVERIFIED |
| SFSpeeler Foundations INC. | Clearwater | FL | — | ◇ UNVERIFIED |
| SGSpring Glass and Mirror, LTD. | Spring | TX | — | ◇ UNVERIFIED |
| SPS&s Powerlift Doors, LLC | Newton | KS | — | ◇ UNVERIFIED |
| SDStanley Doors Sys | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| SBStar Building (formerly Ceco Buildings) | Lockeford | CA | — | ◇ UNVERIFIED |
| SBStar Building Sys | Elizabethton | TN | — | ◇ UNVERIFIED |
| SCStarcco Company, INC. | Maryland Heights | MO | — | ◇ UNVERIFIED |
| SSStarflite Systems INC. | Connoquenessing | PA | — | ◇ UNVERIFIED |
| SSStarflite Systems INC. | Saxonburg | PA | — | ◇ UNVERIFIED |
| SSStar Storage Solutions LLC | Lafayette | IN | — | ◇ UNVERIFIED |
| SSStar Storage Solutions LLC | Lafayette | IN | — | ◇ UNVERIFIED |
| SCSt Cloud Window INC | Sauk Rapids | MN | — | ◇ UNVERIFIED |
| SBSteel Buildings and Structures | Mount Airy | NC | — | ◇ UNVERIFIED |
| SCSteel Cell of North America INC. | Cornelia | GA | — | ◇ UNVERIFIED |
| SMSteel & Metal Systems, INC. | Blackshear | GA | — | ◇ UNVERIFIED |
| SSSteelox Systems, INC. | Washington Court House | OH | — | ◇ UNVERIFIED |
| SSSteel Shield Doors and More, LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| SCSteelstar Corporation | Dacono | CO | — | ◇ UNVERIFIED |
| STSteel Tech Industrial CORP | Corona | CA | — | ◇ UNVERIFIED |
| STSteel Traditions | Vista | CA | — | ◇ UNVERIFIED |
| SRStephanus Rudolf Lemmer | Waverly | GA | — | ◇ UNVERIFIED |
| SBSterling Boiler and Mechanical, INC. | Evansville | IN | — | ◇ UNVERIFIED |
| SCStevenson & CO | Baltimore | MD | — | ◇ UNVERIFIED |
| SLSt. Louis Automatic Door, LLC | Valley Park | MO | — | ◇ UNVERIFIED |
| SPStockton Products | Livermore | CA | — | ◇ UNVERIFIED |
