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Limit the use of the foam to openings about 1 inch wide. |
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Based on the size of the opening, take care
to hold the end of the nozzle (and the can upside down) in a
position to allow the foam to come to rest as close as possible in
the center of the opening. |
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As the expanding foam expands, it should
expand equally on both sides of the opening. |
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After a 24 hour period, you may come back
and trim off the excess and paint the foam. |
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You should seal the wires cables and hoses
with the Automotive FireStopper. |
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You should seal the rods and shafts with
the Automotive FireStop Sponge. |