For a flawless finish that complies with recent building code requirements, the fire rated Super Seal-X is the quickest, easiest way to seal off window mullions from the spread of fire, smoke and sound. Its flexible bubble gasket forms a tight, consistent seal against uneven surfaces, and eliminates caulks while preventing unsightly cracks in these movement-prone areas. Available in two colors: pink for easier identification by code compliance inspectors, and black for a less noticeable aesthetic. This product is UL GREENGUARD Gold Certified.

• Firestop window mullions
• Blocks fire, smoke & sound
• Easy to install