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Openings/Plugs

Openings/Plugs


Firestop Pillows
SpecSeal® SSB Firestop Pillows easily compress and conform around any penetrant. Equally suited for new or existing conditions, SpecSeal® Pillows make short work of even the most complex through-penetration firestop conditions..

Mortar
SpecSeal® SSM Firestop Mortar is a light-weight cost conscious solution for oversized openings in concrete walls and floors. Once mixed with water, SpecSeal® Mortar forms a light weight, low density slurry that easily applies into concrete walls and floors. SpecSeal® Mortar cures quickly and will not spall or crack due to freezing or changes in temperature.

Please call our experienced sales staff with any questions, we have people at each branch location who are STI FIT Level II certified.  You can also call STI Engineering services at 1-800-992-1180 EXT 2 for free engineering support and technical questions on firestop. 

You can find UL system ratings on STI’s website at the below link. 
https://systems.stifirestop.com/

Request a quote today, or contact Denali Industrial Supply to learn more.
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