# penetration

> opening in a wall or floor to accommodate the passage of a mechanical, electrical or structural penetrant

**Wikidata**: [Q7162623](https://www.wikidata.org/wiki/Q7162623)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Penetration_(firestop))  
**Source**: https://4ort.xyz/entity/penetration-q7162623