Metacaulk 66389 MC 150+ Firestop Sealant - 5 Gallon Pail

Elastomeric, one-component, general purpose, fire-rated sealant and smoke seal for construction joints and through-penetrations.

• UL classified systems up to 4 hr.
• Elastomeric
• Non-sag
• Mold inhibitor tested to ASTM G21
• Tested to ASTM E814 (UL 1479) & ASTM E1966 (UL2079)
• STC rating 65
• 3 year shelf life