# Sealing Up Unused Cast In Collars ### Issue Image: ![[Pasted image 20250225122727.png]] ## Issue Description: 1. It is a frequent occurrence that extra cast in collars are installed which don't end up being used. 2. These need to be fire sealed correctly otherwise they will fail a future inspection. ## Actions to Prevent this Issue: - [ ] Builder shall check that all unused cast-in Penetrations are sealed up correctly.