Our grey Exel material is made of medium weight, woven polycotton, with added stainless steel fibres for shielding. Exel is very effective across all frequencies tested, but is particularly good at lower RF frequencies such as TETRA and 4G (800 MHz), which are quite hard to screen against. 4G also uses 1800 MHz and 2600 MHz which will be screened by Exel.
It is 1.45m wide, and would be ideal for curtain lining, sheets or clothing.
Exel is made from 36% polyester, 36% cotton, and 28% stainless steel fibre.