Proset systems firestopping penetration
ProSet Systems, Inc. was the first company to test a firestop device at Underwriters. Laboratories in accordance with UL and ASTM E fire test .
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Proset Systems, Inc. |
Description:A very interesting calculation Packing Eliminated for 1 or 2 hr. The wool batt acts as a backing for the intumescent sealant that is used to seal both ends of the sleeve. Mineral wool batt insulation is a common fireproof material used to insulate hot water heaters, fireplace inserts, and heating ducts. The best source for this packing material are the local commercial insulators in your area.