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 Firestops are for various types of pipe penetrations and plumbing fixture Because these penetration systems also contain smoke and water, they help.
Description:Understanding the UL Ratings Designations The first letter of the listing designation identifies the type of penetrated fire-rated structure: A Class Two listing requires the material to be resistant to a foot water pressure head. Finally, a Class Three listing requires the material to be resistant to Our vertical and 4 hr. C for both floor and wall penetrations F for floor penetrations only W for wall penetrations only The second letter of the designation identifies the construction type: The way a sleeve is packed and sealed are directly proportional to the amount of time a system will suppress a fire. Most distributors stock it as well.