roof vent

Code 4 British Standard lead to BS EN 12588:1999.
Semi compressible Derexculate breathing base layer.
Packaged solution for regulation compliance.
Boxed 3 No.1200mm x 300mm pre-creased lengths per box.
Pitch applications 22.5 ° to 80 °.
May be conventionally restrained if required.
Available in boxed quantities.