Duo Cavity Sock - 91-100mm Cavity x 1.2m - 1 Hour Fire RatingGIS Duo Cavity Socks are designed to suit both Masonry Blockwork & Masonry Timber frame rated MF systems in construction applications. GIS Duo Cavity Socks are designed to prevent the spread of flames and smoke as well as reducing the spread of sound along the cavity. GIS Duo Cavity Socks are designed to meet current fire and building regulations and are rigorously tested to current accreditation and provides up to 4 hours fire integrity. GIS Duo

Renowned brand: VELUX is a world-renowned brand with over 75 years of experience in the skylight and roof window industry

Roll weight of 8

reducing the risk of condensation

which requires wiring systems to be supported by materials which are unlikely to prematurely collapse in the event of a fire

Rigid and semi-rigid slabs

1200 x 150 x 50mm (24pcs/28

FFL over floor deck 17mm

Hush-System 2003 Advanced

because lead is heavy

Roll weight: 11

Next Day Delivery & Collection Available

• UV treated for extended use outdoors