| Smart Local Union No 20 | Related tax-exempt org | Labor union | IN | 351578996 |
| SMW Local No 20 Indianapolis AREA Pension Trust Fund | Related tax-exempt org | Provide retirement benefits to members or their beneficiaries | IN | 510168516 |
| SMW Local No 20 Defined Contribution Pension Fund | Related tax-exempt org | Provide retirement benefits to members or their beneficiaries | IN | 352062343 |
| BCRC Administrators | Related tax-exempt org | Contributing employer | IN | — |
| Joint Apprentice Training Fund | Related tax-exempt org | Contributing employer | IN | — |
| Northern in Sheet Metal | Related tax-exempt org | Contributing employer | IN | — |
| Smacna of Central Indiana | Related tax-exempt org | Contributing employer | IN | — |
| SMW Local 20 FCU | Related tax-exempt org | Contributing employer | IN | — |
| SMW Local 303 FCU | Related tax-exempt org | Contributing employer | IN | — |
| International Training Institute | Related tax-exempt org | Contributing employer | VA | — |
| Sheet Metal Contractors Assoc of Evansville | Related tax-exempt org | Contributing employer | IN | — |
| Smart International Union | Related tax-exempt org | Contributing employer | DC | — |
| C & L Sheet Metal LLC | Related partnership | Contributing employer | IN | — |
| DA DODD LLC | Related partnership | Contributing employer | IN | — |
| HM White INC | Related partnership | Contributing employer | MI | — |
| Metal Exterior LLC | Related partnership | Contributing employer | IN | — |
| Technical Balance LLC | Related partnership | Contributing employer | IN | — |
| Empire BIM LLC | Related partnership | Contributing employer | IN | — |
| A & a Precision Heating | Related taxable corporation/trust | Contributing employer | IN | — |
| A M S Mechanical INC | Related taxable corporation/trust | Contributing employer | IL | — |
| A&R Mechanical Contractors INC | Related taxable corporation/trust | Contributing employer | IL | — |
| ACE AIR INC | Related taxable corporation/trust | Contributing employer | IN | — |
| Advanced Mechanical Systems | Related taxable corporation/trust | Contributing employer | IN | — |
| Advanced Metal Solutions | Related taxable corporation/trust | Contributing employer | MO | — |
| AIR Comfort Corporation | Related taxable corporation/trust | Contributing employer | IL | — |