Nelson Firestop Pillow (PLW™) is a compressible
firestop device that is well suited for installations where
frequent changes may be required. PLW™ consists of
a mineral fiber treated with a highly intumescent
material enclosed in a strong polyethylene bag. When
exposed to fire, the pillows expand to lock the seal in
place. Even though PLW™ is classified as a
permanent firestop system for several applications
including steel and aluminum cable trays, PLW™ also is
an excellent temporary seal.
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