F-A-1179 – Based on field requests for equal F and T Ratings with toilet flanges this new system was developed for installations from below using SpecSeal® Series SSS or LCI sealant with mineral wool forming material.
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Not Just Another Brick in the Wall
These intumescent urethane foam blocks are installed in openings by compressing and stacking into the opening in a brick-like fashion. The intumescent block expands in high temperatures to impede fire, smoke, and gas passage.
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