A reinforced glass cloth pillow filled with fireproof sponge and intumescent material which expands to 3 times its original size in a fire, fire stopping gaps inside plastic or metal trunking in walls, floors or ceilings.
Pillows will expand at low pressure, locking together to seal off fire without negatively impacting the integrity of the trunking.
Tested to BS476 Part 22 (1987), achieving up to 4 hours integrity.
Also tested at VNE to European Standard EN1363-1 (2000).
17 sizes available
Envirograf Product 27