F30 Accessories/Sundry Items for Brick/Block/Stone Walling

Vertical width not exceeding 225mm 4.86 1.72 33.97 – 6.46 m2 40.43

Two courses slates in cement mortar (1:3) Horizontal

width exceeding 225mm 9.31 3.46 68.33 – 13.67 m2 82.00 Vertical

width exceeding 225mm 9.31 5.18 102.31 – 13.67 m2 115.98