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| SUBSIDIARIES OF QUANEX BUILDING PRODUCTS CORPORATION | | LOCATION OF INCORPORATION |
| Quanex North American Fenestration, Inc. | | Ohio |
| Quanex North American Cabinet Components, Inc. | | Delaware |
| Quanex Homeshield LLC | | Delaware |
| Mikron Industries, Inc. | | Washington |
| Mikron Washington LLC | | Washington |
| Quanex IG Systems, Inc. | | Ohio |
| Edgetech Europe GmbH | | Germany |
| Edgetech (UK) LTD. | | United Kingdom and Wales |
| Flamstead Holdings Limited | | United Kingdom and Wales |
| Liniar Ltd. | | United Kingdom and Wales |
| Woodcraft Industries, Inc. | | | | Minnesota |
| Brentwood Acquisition Corp. | | | | Minnesota |
| Primewood, Inc. | | | | North Dakota |