Rectorseal 66379 Metacaulk 1200, 5 .gal Pail SprayRectorseal 66379 All grades of Metacaulk 1200 are single component, general use fire rated sealant for construction joints. Cures to elastomeric membrane seal suitable for dynamic movement areas. Prevents spread of flames smoke hot gas water through joint openings. Features Minimum 3 Year Shelf Life and Protected in a wet stage as well as in a dry stage against mold growth with a combination of biocides. Paintable, VOC compliant, Excellent Freeze thaw
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