10oz DAP High Heat Mortar Fire Stop Caulk $3.63 at Amazon $3.63 $11 Amazon has the DAP 7079818854 High Heat Mortar Fire Stop Caulk (Black, 10 fl. oz.) for $3.63 with free shipping on $25+ or with Prime.Ace Hardware has it for $2.79 (limited locations) or $3.59 with free store pickup.Stops air leaks and sets rock hard when fired. $3.63 retail: $11 Report Posted by DrBatman08/19/2021 at 05:57 PM PT
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