The
Intumescent Strip provides safe,
efficient system for sealing
air space between door and frame
in the event of fire. When exposed
to heat and/or fire, the intumescent
material expands to fill any
gaps.
Intumescent Strip begins to
expand at 250°F (121°C), forming
a hard char. High expansion
(20 times its volume). It expands
gradually at relatively low
temperature. It has a reservoir
for continued expansion. |