Edge finishing for the roofing slate : Chipped (hand cut ) , Sawn cut Roofing slate size available : 600x300mm (24”x12”) 500x250mm (20”x10”) 400x300mm (16”x12”) 400x250mm (16”x10”) 400x200mm (16”x8”) 300x250mm (12”x10”) 300x200mm (12”x8”) 300x300mm (12”x12”) Roofing slate production time : 10-20 days