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BOSS® 350 Flame Retardant Duct Sealer
100% Siliconized Acrylic Duct Sealer, tested according to ASTM-C-834, ASTM E 84, and fire-resistant to BS476. A high-quality product that adheres well to ducting materials. Suitable for use in high, medium, and low-temperature conditions within HVAC systems. Not suitable for temperatures below 4.4°C (40°F). It can be painted over.
Packaging Size: 310 ml
Color: Gray
Versatile protection from waterborne threats
Reduces common tap water contaminants including
chlorine, organic compounds, heavy metals, rust, phenols.

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