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| SUBSIDIARIES OF QUANEX BUILDING PRODUCTS CORPORATION | | LOCATION OF INCORPORATION |
| Amesbury (Ningbo) Hardware Trading | | China |
| Amesbury Acquisition Holdings (2) Inc. | | Delaware |
| Amesbury Canada Inc. | | Canada |
| Amesbury Group Inc. | | Delaware |
| Amesbury Industries Inc. | | Delaware |
| Amesbury Mexico S de RL de CV | | Mexico |
| Amesburytruth Inc. | | Canada |
Ashland Hardware And Casting Systems De Mexico, S. de
R.L. de C.V. | | Mexico |
| Ashland Hardware Holdings, Inc. | | Delaware |
| Ashland Hardware, LLC | | Delaware |
| Avantek Machinery Ltd. | | United Kingdom and Wales |
| Balance Systems Inc. | | South Dakota |
| Barry G Lawrence Inc. | | North Carolina |
| Bilco Access Solutions Limited | | United Kingdom and Wales |
| Bilco UK Limited | | Connecticut |
| Bilcomex Commercializadora S de RL de CV | | Mexico |
| Bilcomex S de RL de CV | | Mexico |
| Edgetech (UK) LTD. | | United Kingdom and Wales |
| Edgetech Europe GmbH | | Germany |
| ERA Home Security Limited | | United Kingdom and Wales |
| Flamstead Holdings Limited | | United Kingdom and Wales |
| Giesse Brasil Industria e Comercio de Ferragens e Acessorios Ltda | | Brazil |
| Giesse Group Argentina SA | | Argentina |
| Giesse Group Hellas S.A. | | Greece |
| Giesse Group Iberia S.A. | | Spain |
| Giesse S.p.A. | | Italy |
| HL Plastics Ltd. | | United Kingdom and Wales |
| Jasper Acquisition Holdings Limited | | United Kingdom and Wales |
| Liniar Ltd. | | United Kingdom and Wales |
| Mikron Industries, Inc. | | Washington |
| Mikron Washington LLC | | Washington |
| Octroi Group Limited | | United Kingdom and Wales |
| Quanex Custom Components, Inc. | | Minnesota |
| Quanex Homeshield LLC | | Delaware |
| Quanex IG Systems, Inc. | | Ohio |
| Quanex North American Cabinet Components, Inc. | | Delaware |
| Quanex North American Fenestration, Inc. | | Ohio |
| Response Electronics Ltd. | | United Kingdom and Wales |
| Schlegel Acquisition Holdings Limited | | United Kingdom and Wales |
| Schlegel Limited | | United Kingdom and Wales |
| Schlegel Germany GMBH | | Germany |
| Schlegel Pty Limited | | Australia |
| Schlegel Systems Inc | | Delaware |