This is a case of 12 tubes. Each tube is 10.1 ounce. Color of caulk is black.
Low cost, non-combustible fireplace mortar that passes ASTM E-136 and has been tested to 3000°F. Can also be used in residential firestop applications where the building code calls for a non-combustible material. • Ideal for sealing fireplaces and wood burning stoves
Boss 139 Firestop Caulk
$51.94
Description
This is a case of 12 tubes. Each tube is 10.1 ounce. Color of caulk is black.
Low cost, non-combustible fireplace mortar that passes ASTM E-136
and has been tested to 3000°F. Can also be used in residential firestop
applications where the building code calls for a non-combustible material.
• Ideal for sealing fireplaces and wood burning stoves
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