EX-21.1 2 q42023exhibit211.htm EX-21.1
EXHIBIT 21.1
SUBSIDIARIES
The following is a list of the subsidiaries of Gibraltar Industries, Inc. as of December 31, 2023. The names of indirectly owned subsidiaries are indented under the names of their respective parent corporations:

Appleton Supply Company, Inc. | Delaware
D.S.B. Holding Corp. | Delaware
The D.S. Brown Company | Ohio
Florence Corporation | Illinois
| Florence Corporation of Kansas | Kansas
Gibraltar Industries Holding Company (UK) Limited | United Kingdom
| Rough Brothers Greenhouse Manufacturing (Shanghai) Co., Ltd | China
Gibraltar Steel Corporation of New York | New York
| Southeastern Metals Manufacturing Company, Inc. | Florida
| Pacific Awards Metals, Inc. | California
| Noll/Norwesco, LLC | Delaware
| SBC Acquisition, LLC | Delaware
| Air Vent Inc. | Delaware
Package Concierge, Inc. | Delaware
Quality Aluminum Products, LLC | Delaware
Rough Brothers Holding Co., Inc. | Ohio
| Terrasmart, Inc. | Ohio
| Rough Brothers Manufacturing, Inc. | Ohio
| Prospiant, Inc. | Ohio
| Apeks, LLC | Ohio
| Thermo Energy Solutions, Inc. | Canada
Solar Group, Inc. | Delaware
| Architectural Mailboxes, LLC | Ohio