3M FireDam Spray 200 is a sprayable water-based material, that dries to form a durable, elastomeric firestop coating. This material, when used as part of an assembly, will firestop building joints, perimeter joints (curtain wall), and through penetration seals. Provides up to 4-hour fire protection in construction joints. Gray spray (also available in red), ± 50% movement capabilities.