Birtley HD90 Cavity Wall Heavy Duty Lintel 2700 mm Guttering Accessories Small slate grey vent is

Small slate grey vent is a ventilation slate to suit 600 mm x 300 mm (24" x 12") and 500 mm x 250 mm (20" x 10") slates

Used for fixing roof shingles

PVC-U push fit drainage system

pull loop and cushioned EVA midlayer ensure easy-wearing and day-long comfort

Designed for use with interlocking profiled or interlocking plain roof tiles

Birtley HD90 Cavity Wall Heavy Duty Lintel 2700 mm Guttering Accessories Small slate grey vent isHeavy duty cavity wall lintel manufactured from structural graded steel to EN10025 Cavity: 90 mm 105 mm Outer Leaf: 100 mm Inner Leaf: 100 mm 60 minute fire rated with 2 coat plaster finish Lack of baseplate and factory fitted expanded polystyrene insulation reduces thermal bridging Hot dip galvanised Must have solid, fully jointed blockwork infill to inner leaf Loading SWL UDL Value: 60 kN