On Dec 1, 2025, American Society for Testing and Materials (ASTM) approved a revised version of ASTM F1004 and published ASTM F1004-25 in December 2025.

This ASTM standard for expansion gates and expandable enclosures include performance requirements, test methods, and marking requirements to promote safe use of expansion gates and expandable enclosures.

This ASTM standard for expansion gates and expandable enclosures are intended for young children aged six months through 24 months. Expansion gates are intended to be erected in an opening, such as a doorway, to prevent the passage of young children, but which can be removed by adult who are able to operate the locking mechanism; Expandable enclosures are intended to completely surround an area or play-space by self-supporting barrier which a young child may be confined.

This revision of the standard mainly adds clause 6.9 to require expansion gates and expandable enclosures under the scope of this consumer safety specification shall not include any features or openings within the gate that allow for unassisted pet entry or egress.

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